Fix BUILD.gn (#4378)

This change restricts BUILD.gn so that spirv-fuzz-related targets
are only built when in a Chromium checkout. This is due to their
dependence on protobuf, which is available in gn-friendly form in
Chromium only.

Fixes https://crbug.com/tint/987
diff --git a/BUILD.gn b/BUILD.gn
index 4c58233..53e2128 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -14,9 +14,9 @@
 
 import("//build_overrides/build.gni")
 import("//build_overrides/spirv_tools.gni")
-import("//third_party/protobuf/proto_library.gni")
 if (build_with_chromium) {
   import("//testing/test.gni")
+  import("//third_party/protobuf/proto_library.gni")
 }
 
 spirv_headers = spirv_tools_spirv_headers_dir
@@ -878,415 +878,419 @@
   configs += [ ":spvtools_internal_config" ]
 }
 
-proto_library("spvtools_fuzz_proto") {
-  sources = [
-    "source/fuzz/protobufs/spvtoolsfuzz.proto",
-  ]
-  generate_python = false
-  use_protobuf_full = true
-}
+if (build_with_chromium) {
 
-static_library("spvtools_fuzz") {
-  sources = [
-    "source/fuzz/added_function_reducer.cpp",
-    "source/fuzz/added_function_reducer.h",
-    "source/fuzz/available_instructions.cpp",
-    "source/fuzz/available_instructions.h",
-    "source/fuzz/call_graph.cpp",
-    "source/fuzz/call_graph.h",
-    "source/fuzz/comparator_deep_blocks_first.h",
-    "source/fuzz/counter_overflow_id_source.cpp",
-    "source/fuzz/counter_overflow_id_source.h",
-    "source/fuzz/data_descriptor.cpp",
-    "source/fuzz/data_descriptor.h",
-    "source/fuzz/equivalence_relation.h",
-    "source/fuzz/fact_manager/constant_uniform_facts.cpp",
-    "source/fuzz/fact_manager/constant_uniform_facts.h",
-    "source/fuzz/fact_manager/data_synonym_and_id_equation_facts.cpp",
-    "source/fuzz/fact_manager/data_synonym_and_id_equation_facts.h",
-    "source/fuzz/fact_manager/dead_block_facts.cpp",
-    "source/fuzz/fact_manager/dead_block_facts.h",
-    "source/fuzz/fact_manager/fact_manager.cpp",
-    "source/fuzz/fact_manager/fact_manager.h",
-    "source/fuzz/fact_manager/irrelevant_value_facts.cpp",
-    "source/fuzz/fact_manager/irrelevant_value_facts.h",
-    "source/fuzz/fact_manager/livesafe_function_facts.cpp",
-    "source/fuzz/fact_manager/livesafe_function_facts.h",
-    "source/fuzz/force_render_red.cpp",
-    "source/fuzz/force_render_red.h",
-    "source/fuzz/fuzzer.cpp",
-    "source/fuzz/fuzzer.h",
-    "source/fuzz/fuzzer_context.cpp",
-    "source/fuzz/fuzzer_context.h",
-    "source/fuzz/fuzzer_pass.cpp",
-    "source/fuzz/fuzzer_pass.h",
-    "source/fuzz/fuzzer_pass_add_access_chains.cpp",
-    "source/fuzz/fuzzer_pass_add_access_chains.h",
-    "source/fuzz/fuzzer_pass_add_bit_instruction_synonyms.cpp",
-    "source/fuzz/fuzzer_pass_add_bit_instruction_synonyms.h",
-    "source/fuzz/fuzzer_pass_add_composite_extract.cpp",
-    "source/fuzz/fuzzer_pass_add_composite_extract.h",
-    "source/fuzz/fuzzer_pass_add_composite_inserts.cpp",
-    "source/fuzz/fuzzer_pass_add_composite_inserts.h",
-    "source/fuzz/fuzzer_pass_add_composite_types.cpp",
-    "source/fuzz/fuzzer_pass_add_composite_types.h",
-    "source/fuzz/fuzzer_pass_add_copy_memory.cpp",
-    "source/fuzz/fuzzer_pass_add_copy_memory.h",
-    "source/fuzz/fuzzer_pass_add_dead_blocks.cpp",
-    "source/fuzz/fuzzer_pass_add_dead_blocks.h",
-    "source/fuzz/fuzzer_pass_add_dead_breaks.cpp",
-    "source/fuzz/fuzzer_pass_add_dead_breaks.h",
-    "source/fuzz/fuzzer_pass_add_dead_continues.cpp",
-    "source/fuzz/fuzzer_pass_add_dead_continues.h",
-    "source/fuzz/fuzzer_pass_add_equation_instructions.cpp",
-    "source/fuzz/fuzzer_pass_add_equation_instructions.h",
-    "source/fuzz/fuzzer_pass_add_function_calls.cpp",
-    "source/fuzz/fuzzer_pass_add_function_calls.h",
-    "source/fuzz/fuzzer_pass_add_global_variables.cpp",
-    "source/fuzz/fuzzer_pass_add_global_variables.h",
-    "source/fuzz/fuzzer_pass_add_image_sample_unused_components.cpp",
-    "source/fuzz/fuzzer_pass_add_image_sample_unused_components.h",
-    "source/fuzz/fuzzer_pass_add_loads.cpp",
-    "source/fuzz/fuzzer_pass_add_loads.h",
-    "source/fuzz/fuzzer_pass_add_local_variables.cpp",
-    "source/fuzz/fuzzer_pass_add_local_variables.h",
-    "source/fuzz/fuzzer_pass_add_loop_preheaders.cpp",
-    "source/fuzz/fuzzer_pass_add_loop_preheaders.h",
-    "source/fuzz/fuzzer_pass_add_loops_to_create_int_constant_synonyms.cpp",
-    "source/fuzz/fuzzer_pass_add_loops_to_create_int_constant_synonyms.h",
-    "source/fuzz/fuzzer_pass_add_no_contraction_decorations.cpp",
-    "source/fuzz/fuzzer_pass_add_no_contraction_decorations.h",
-    "source/fuzz/fuzzer_pass_add_opphi_synonyms.cpp",
-    "source/fuzz/fuzzer_pass_add_opphi_synonyms.h",
-    "source/fuzz/fuzzer_pass_add_parameters.cpp",
-    "source/fuzz/fuzzer_pass_add_parameters.h",
-    "source/fuzz/fuzzer_pass_add_relaxed_decorations.cpp",
-    "source/fuzz/fuzzer_pass_add_relaxed_decorations.h",
-    "source/fuzz/fuzzer_pass_add_stores.cpp",
-    "source/fuzz/fuzzer_pass_add_stores.h",
-    "source/fuzz/fuzzer_pass_add_synonyms.cpp",
-    "source/fuzz/fuzzer_pass_add_synonyms.h",
-    "source/fuzz/fuzzer_pass_add_vector_shuffle_instructions.cpp",
-    "source/fuzz/fuzzer_pass_add_vector_shuffle_instructions.h",
-    "source/fuzz/fuzzer_pass_adjust_branch_weights.cpp",
-    "source/fuzz/fuzzer_pass_adjust_branch_weights.h",
-    "source/fuzz/fuzzer_pass_adjust_function_controls.cpp",
-    "source/fuzz/fuzzer_pass_adjust_function_controls.h",
-    "source/fuzz/fuzzer_pass_adjust_loop_controls.cpp",
-    "source/fuzz/fuzzer_pass_adjust_loop_controls.h",
-    "source/fuzz/fuzzer_pass_adjust_memory_operands_masks.cpp",
-    "source/fuzz/fuzzer_pass_adjust_memory_operands_masks.h",
-    "source/fuzz/fuzzer_pass_adjust_selection_controls.cpp",
-    "source/fuzz/fuzzer_pass_adjust_selection_controls.h",
-    "source/fuzz/fuzzer_pass_apply_id_synonyms.cpp",
-    "source/fuzz/fuzzer_pass_apply_id_synonyms.h",
-    "source/fuzz/fuzzer_pass_construct_composites.cpp",
-    "source/fuzz/fuzzer_pass_construct_composites.h",
-    "source/fuzz/fuzzer_pass_copy_objects.cpp",
-    "source/fuzz/fuzzer_pass_copy_objects.h",
-    "source/fuzz/fuzzer_pass_donate_modules.cpp",
-    "source/fuzz/fuzzer_pass_donate_modules.h",
-    "source/fuzz/fuzzer_pass_duplicate_regions_with_selections.cpp",
-    "source/fuzz/fuzzer_pass_duplicate_regions_with_selections.h",
-    "source/fuzz/fuzzer_pass_expand_vector_reductions.cpp",
-    "source/fuzz/fuzzer_pass_expand_vector_reductions.h",
-    "source/fuzz/fuzzer_pass_flatten_conditional_branches.cpp",
-    "source/fuzz/fuzzer_pass_flatten_conditional_branches.h",
-    "source/fuzz/fuzzer_pass_inline_functions.cpp",
-    "source/fuzz/fuzzer_pass_inline_functions.h",
-    "source/fuzz/fuzzer_pass_interchange_signedness_of_integer_operands.cpp",
-    "source/fuzz/fuzzer_pass_interchange_signedness_of_integer_operands.h",
-    "source/fuzz/fuzzer_pass_interchange_zero_like_constants.cpp",
-    "source/fuzz/fuzzer_pass_interchange_zero_like_constants.h",
-    "source/fuzz/fuzzer_pass_invert_comparison_operators.cpp",
-    "source/fuzz/fuzzer_pass_invert_comparison_operators.h",
-    "source/fuzz/fuzzer_pass_make_vector_operations_dynamic.cpp",
-    "source/fuzz/fuzzer_pass_make_vector_operations_dynamic.h",
-    "source/fuzz/fuzzer_pass_merge_blocks.cpp",
-    "source/fuzz/fuzzer_pass_merge_blocks.h",
-    "source/fuzz/fuzzer_pass_merge_function_returns.cpp",
-    "source/fuzz/fuzzer_pass_merge_function_returns.h",
-    "source/fuzz/fuzzer_pass_mutate_pointers.cpp",
-    "source/fuzz/fuzzer_pass_mutate_pointers.h",
-    "source/fuzz/fuzzer_pass_obfuscate_constants.cpp",
-    "source/fuzz/fuzzer_pass_obfuscate_constants.h",
-    "source/fuzz/fuzzer_pass_outline_functions.cpp",
-    "source/fuzz/fuzzer_pass_outline_functions.h",
-    "source/fuzz/fuzzer_pass_permute_blocks.cpp",
-    "source/fuzz/fuzzer_pass_permute_blocks.h",
-    "source/fuzz/fuzzer_pass_permute_function_parameters.cpp",
-    "source/fuzz/fuzzer_pass_permute_function_parameters.h",
-    "source/fuzz/fuzzer_pass_permute_function_variables.cpp",
-    "source/fuzz/fuzzer_pass_permute_function_variables.h",
-    "source/fuzz/fuzzer_pass_permute_instructions.cpp",
-    "source/fuzz/fuzzer_pass_permute_instructions.h",
-    "source/fuzz/fuzzer_pass_permute_phi_operands.cpp",
-    "source/fuzz/fuzzer_pass_permute_phi_operands.h",
-    "source/fuzz/fuzzer_pass_propagate_instructions_down.cpp",
-    "source/fuzz/fuzzer_pass_propagate_instructions_down.h",
-    "source/fuzz/fuzzer_pass_propagate_instructions_up.cpp",
-    "source/fuzz/fuzzer_pass_propagate_instructions_up.h",
-    "source/fuzz/fuzzer_pass_push_ids_through_variables.cpp",
-    "source/fuzz/fuzzer_pass_push_ids_through_variables.h",
-    "source/fuzz/fuzzer_pass_replace_adds_subs_muls_with_carrying_extended.cpp",
-    "source/fuzz/fuzzer_pass_replace_adds_subs_muls_with_carrying_extended.h",
-    "source/fuzz/fuzzer_pass_replace_branches_from_dead_blocks_with_exits.cpp",
-    "source/fuzz/fuzzer_pass_replace_branches_from_dead_blocks_with_exits.h",
-    "source/fuzz/fuzzer_pass_replace_copy_memories_with_loads_stores.cpp",
-    "source/fuzz/fuzzer_pass_replace_copy_memories_with_loads_stores.h",
-    "source/fuzz/fuzzer_pass_replace_copy_objects_with_stores_loads.cpp",
-    "source/fuzz/fuzzer_pass_replace_copy_objects_with_stores_loads.h",
-    "source/fuzz/fuzzer_pass_replace_irrelevant_ids.cpp",
-    "source/fuzz/fuzzer_pass_replace_irrelevant_ids.h",
-    "source/fuzz/fuzzer_pass_replace_linear_algebra_instructions.cpp",
-    "source/fuzz/fuzzer_pass_replace_linear_algebra_instructions.h",
-    "source/fuzz/fuzzer_pass_replace_loads_stores_with_copy_memories.cpp",
-    "source/fuzz/fuzzer_pass_replace_loads_stores_with_copy_memories.h",
-    "source/fuzz/fuzzer_pass_replace_opphi_ids_from_dead_predecessors.cpp",
-    "source/fuzz/fuzzer_pass_replace_opphi_ids_from_dead_predecessors.h",
-    "source/fuzz/fuzzer_pass_replace_opselects_with_conditional_branches.cpp",
-    "source/fuzz/fuzzer_pass_replace_opselects_with_conditional_branches.h",
-    "source/fuzz/fuzzer_pass_replace_parameter_with_global.cpp",
-    "source/fuzz/fuzzer_pass_replace_parameter_with_global.h",
-    "source/fuzz/fuzzer_pass_replace_params_with_struct.cpp",
-    "source/fuzz/fuzzer_pass_replace_params_with_struct.h",
-    "source/fuzz/fuzzer_pass_split_blocks.cpp",
-    "source/fuzz/fuzzer_pass_split_blocks.h",
-    "source/fuzz/fuzzer_pass_swap_commutable_operands.cpp",
-    "source/fuzz/fuzzer_pass_swap_commutable_operands.h",
-    "source/fuzz/fuzzer_pass_swap_conditional_branch_operands.cpp",
-    "source/fuzz/fuzzer_pass_swap_conditional_branch_operands.h",
-    "source/fuzz/fuzzer_pass_swap_functions.cpp",
-    "source/fuzz/fuzzer_pass_swap_functions.h",
-    "source/fuzz/fuzzer_pass_toggle_access_chain_instruction.cpp",
-    "source/fuzz/fuzzer_pass_toggle_access_chain_instruction.h",
-    "source/fuzz/fuzzer_pass_wrap_regions_in_selections.cpp",
-    "source/fuzz/fuzzer_pass_wrap_regions_in_selections.h",
-    "source/fuzz/fuzzer_util.cpp",
-    "source/fuzz/fuzzer_util.h",
-    "source/fuzz/id_use_descriptor.cpp",
-    "source/fuzz/id_use_descriptor.h",
-    "source/fuzz/instruction_descriptor.cpp",
-    "source/fuzz/instruction_descriptor.h",
-    "source/fuzz/instruction_message.cpp",
-    "source/fuzz/instruction_message.h",
-    "source/fuzz/overflow_id_source.cpp",
-    "source/fuzz/overflow_id_source.h",
-    "source/fuzz/pass_management/repeated_pass_instances.h",
-    "source/fuzz/pass_management/repeated_pass_manager.cpp",
-    "source/fuzz/pass_management/repeated_pass_manager.h",
-    "source/fuzz/pass_management/repeated_pass_manager_looped_with_recommendations.cpp",
-    "source/fuzz/pass_management/repeated_pass_manager_looped_with_recommendations.h",
-    "source/fuzz/pass_management/repeated_pass_manager_random_with_recommendations.cpp",
-    "source/fuzz/pass_management/repeated_pass_manager_random_with_recommendations.h",
-    "source/fuzz/pass_management/repeated_pass_manager_simple.cpp",
-    "source/fuzz/pass_management/repeated_pass_manager_simple.h",
-    "source/fuzz/pass_management/repeated_pass_recommender.cpp",
-    "source/fuzz/pass_management/repeated_pass_recommender.h",
-    "source/fuzz/pass_management/repeated_pass_recommender_standard.cpp",
-    "source/fuzz/pass_management/repeated_pass_recommender_standard.h",
-    "source/fuzz/protobufs/spirvfuzz_protobufs.h",
-    "source/fuzz/pseudo_random_generator.cpp",
-    "source/fuzz/pseudo_random_generator.h",
-    "source/fuzz/random_generator.cpp",
-    "source/fuzz/random_generator.h",
-    "source/fuzz/replayer.cpp",
-    "source/fuzz/replayer.h",
-    "source/fuzz/shrinker.cpp",
-    "source/fuzz/shrinker.h",
-    "source/fuzz/transformation.cpp",
-    "source/fuzz/transformation.h",
-    "source/fuzz/transformation_access_chain.cpp",
-    "source/fuzz/transformation_access_chain.h",
-    "source/fuzz/transformation_add_bit_instruction_synonym.cpp",
-    "source/fuzz/transformation_add_bit_instruction_synonym.h",
-    "source/fuzz/transformation_add_constant_boolean.cpp",
-    "source/fuzz/transformation_add_constant_boolean.h",
-    "source/fuzz/transformation_add_constant_composite.cpp",
-    "source/fuzz/transformation_add_constant_composite.h",
-    "source/fuzz/transformation_add_constant_null.cpp",
-    "source/fuzz/transformation_add_constant_null.h",
-    "source/fuzz/transformation_add_constant_scalar.cpp",
-    "source/fuzz/transformation_add_constant_scalar.h",
-    "source/fuzz/transformation_add_copy_memory.cpp",
-    "source/fuzz/transformation_add_copy_memory.h",
-    "source/fuzz/transformation_add_dead_block.cpp",
-    "source/fuzz/transformation_add_dead_block.h",
-    "source/fuzz/transformation_add_dead_break.cpp",
-    "source/fuzz/transformation_add_dead_break.h",
-    "source/fuzz/transformation_add_dead_continue.cpp",
-    "source/fuzz/transformation_add_dead_continue.h",
-    "source/fuzz/transformation_add_early_terminator_wrapper.cpp",
-    "source/fuzz/transformation_add_early_terminator_wrapper.h",
-    "source/fuzz/transformation_add_function.cpp",
-    "source/fuzz/transformation_add_function.h",
-    "source/fuzz/transformation_add_global_undef.cpp",
-    "source/fuzz/transformation_add_global_undef.h",
-    "source/fuzz/transformation_add_global_variable.cpp",
-    "source/fuzz/transformation_add_global_variable.h",
-    "source/fuzz/transformation_add_image_sample_unused_components.cpp",
-    "source/fuzz/transformation_add_image_sample_unused_components.h",
-    "source/fuzz/transformation_add_local_variable.cpp",
-    "source/fuzz/transformation_add_local_variable.h",
-    "source/fuzz/transformation_add_loop_preheader.cpp",
-    "source/fuzz/transformation_add_loop_preheader.h",
-    "source/fuzz/transformation_add_loop_to_create_int_constant_synonym.cpp",
-    "source/fuzz/transformation_add_loop_to_create_int_constant_synonym.h",
-    "source/fuzz/transformation_add_no_contraction_decoration.cpp",
-    "source/fuzz/transformation_add_no_contraction_decoration.h",
-    "source/fuzz/transformation_add_opphi_synonym.cpp",
-    "source/fuzz/transformation_add_opphi_synonym.h",
-    "source/fuzz/transformation_add_parameter.cpp",
-    "source/fuzz/transformation_add_parameter.h",
-    "source/fuzz/transformation_add_relaxed_decoration.cpp",
-    "source/fuzz/transformation_add_relaxed_decoration.h",
-    "source/fuzz/transformation_add_spec_constant_op.cpp",
-    "source/fuzz/transformation_add_spec_constant_op.h",
-    "source/fuzz/transformation_add_synonym.cpp",
-    "source/fuzz/transformation_add_synonym.h",
-    "source/fuzz/transformation_add_type_array.cpp",
-    "source/fuzz/transformation_add_type_array.h",
-    "source/fuzz/transformation_add_type_boolean.cpp",
-    "source/fuzz/transformation_add_type_boolean.h",
-    "source/fuzz/transformation_add_type_float.cpp",
-    "source/fuzz/transformation_add_type_float.h",
-    "source/fuzz/transformation_add_type_function.cpp",
-    "source/fuzz/transformation_add_type_function.h",
-    "source/fuzz/transformation_add_type_int.cpp",
-    "source/fuzz/transformation_add_type_int.h",
-    "source/fuzz/transformation_add_type_matrix.cpp",
-    "source/fuzz/transformation_add_type_matrix.h",
-    "source/fuzz/transformation_add_type_pointer.cpp",
-    "source/fuzz/transformation_add_type_pointer.h",
-    "source/fuzz/transformation_add_type_struct.cpp",
-    "source/fuzz/transformation_add_type_struct.h",
-    "source/fuzz/transformation_add_type_vector.cpp",
-    "source/fuzz/transformation_add_type_vector.h",
-    "source/fuzz/transformation_adjust_branch_weights.cpp",
-    "source/fuzz/transformation_adjust_branch_weights.h",
-    "source/fuzz/transformation_composite_construct.cpp",
-    "source/fuzz/transformation_composite_construct.h",
-    "source/fuzz/transformation_composite_extract.cpp",
-    "source/fuzz/transformation_composite_extract.h",
-    "source/fuzz/transformation_composite_insert.cpp",
-    "source/fuzz/transformation_composite_insert.h",
-    "source/fuzz/transformation_compute_data_synonym_fact_closure.cpp",
-    "source/fuzz/transformation_compute_data_synonym_fact_closure.h",
-    "source/fuzz/transformation_context.cpp",
-    "source/fuzz/transformation_context.h",
-    "source/fuzz/transformation_duplicate_region_with_selection.cpp",
-    "source/fuzz/transformation_duplicate_region_with_selection.h",
-    "source/fuzz/transformation_equation_instruction.cpp",
-    "source/fuzz/transformation_equation_instruction.h",
-    "source/fuzz/transformation_expand_vector_reduction.cpp",
-    "source/fuzz/transformation_expand_vector_reduction.h",
-    "source/fuzz/transformation_flatten_conditional_branch.cpp",
-    "source/fuzz/transformation_flatten_conditional_branch.h",
-    "source/fuzz/transformation_function_call.cpp",
-    "source/fuzz/transformation_function_call.h",
-    "source/fuzz/transformation_inline_function.cpp",
-    "source/fuzz/transformation_inline_function.h",
-    "source/fuzz/transformation_invert_comparison_operator.cpp",
-    "source/fuzz/transformation_invert_comparison_operator.h",
-    "source/fuzz/transformation_load.cpp",
-    "source/fuzz/transformation_load.h",
-    "source/fuzz/transformation_make_vector_operation_dynamic.cpp",
-    "source/fuzz/transformation_make_vector_operation_dynamic.h",
-    "source/fuzz/transformation_merge_blocks.cpp",
-    "source/fuzz/transformation_merge_blocks.h",
-    "source/fuzz/transformation_merge_function_returns.cpp",
-    "source/fuzz/transformation_merge_function_returns.h",
-    "source/fuzz/transformation_move_block_down.cpp",
-    "source/fuzz/transformation_move_block_down.h",
-    "source/fuzz/transformation_move_instruction_down.cpp",
-    "source/fuzz/transformation_move_instruction_down.h",
-    "source/fuzz/transformation_mutate_pointer.cpp",
-    "source/fuzz/transformation_mutate_pointer.h",
-    "source/fuzz/transformation_outline_function.cpp",
-    "source/fuzz/transformation_outline_function.h",
-    "source/fuzz/transformation_permute_function_parameters.cpp",
-    "source/fuzz/transformation_permute_function_parameters.h",
-    "source/fuzz/transformation_permute_phi_operands.cpp",
-    "source/fuzz/transformation_permute_phi_operands.h",
-    "source/fuzz/transformation_propagate_instruction_down.cpp",
-    "source/fuzz/transformation_propagate_instruction_down.h",
-    "source/fuzz/transformation_propagate_instruction_up.cpp",
-    "source/fuzz/transformation_propagate_instruction_up.h",
-    "source/fuzz/transformation_push_id_through_variable.cpp",
-    "source/fuzz/transformation_push_id_through_variable.h",
-    "source/fuzz/transformation_record_synonymous_constants.cpp",
-    "source/fuzz/transformation_record_synonymous_constants.h",
-    "source/fuzz/transformation_replace_add_sub_mul_with_carrying_extended.cpp",
-    "source/fuzz/transformation_replace_add_sub_mul_with_carrying_extended.h",
-    "source/fuzz/transformation_replace_boolean_constant_with_constant_binary.cpp",
-    "source/fuzz/transformation_replace_boolean_constant_with_constant_binary.h",
-    "source/fuzz/transformation_replace_branch_from_dead_block_with_exit.cpp",
-    "source/fuzz/transformation_replace_branch_from_dead_block_with_exit.h",
-    "source/fuzz/transformation_replace_constant_with_uniform.cpp",
-    "source/fuzz/transformation_replace_constant_with_uniform.h",
-    "source/fuzz/transformation_replace_copy_memory_with_load_store.cpp",
-    "source/fuzz/transformation_replace_copy_memory_with_load_store.h",
-    "source/fuzz/transformation_replace_copy_object_with_store_load.cpp",
-    "source/fuzz/transformation_replace_copy_object_with_store_load.h",
-    "source/fuzz/transformation_replace_id_with_synonym.cpp",
-    "source/fuzz/transformation_replace_id_with_synonym.h",
-    "source/fuzz/transformation_replace_irrelevant_id.cpp",
-    "source/fuzz/transformation_replace_irrelevant_id.h",
-    "source/fuzz/transformation_replace_linear_algebra_instruction.cpp",
-    "source/fuzz/transformation_replace_linear_algebra_instruction.h",
-    "source/fuzz/transformation_replace_load_store_with_copy_memory.cpp",
-    "source/fuzz/transformation_replace_load_store_with_copy_memory.h",
-    "source/fuzz/transformation_replace_opphi_id_from_dead_predecessor.cpp",
-    "source/fuzz/transformation_replace_opphi_id_from_dead_predecessor.h",
-    "source/fuzz/transformation_replace_opselect_with_conditional_branch.cpp",
-    "source/fuzz/transformation_replace_opselect_with_conditional_branch.h",
-    "source/fuzz/transformation_replace_parameter_with_global.cpp",
-    "source/fuzz/transformation_replace_parameter_with_global.h",
-    "source/fuzz/transformation_replace_params_with_struct.cpp",
-    "source/fuzz/transformation_replace_params_with_struct.h",
-    "source/fuzz/transformation_set_function_control.cpp",
-    "source/fuzz/transformation_set_function_control.h",
-    "source/fuzz/transformation_set_loop_control.cpp",
-    "source/fuzz/transformation_set_loop_control.h",
-    "source/fuzz/transformation_set_memory_operands_mask.cpp",
-    "source/fuzz/transformation_set_memory_operands_mask.h",
-    "source/fuzz/transformation_set_selection_control.cpp",
-    "source/fuzz/transformation_set_selection_control.h",
-    "source/fuzz/transformation_split_block.cpp",
-    "source/fuzz/transformation_split_block.h",
-    "source/fuzz/transformation_store.cpp",
-    "source/fuzz/transformation_store.h",
-    "source/fuzz/transformation_swap_commutable_operands.cpp",
-    "source/fuzz/transformation_swap_commutable_operands.h",
-    "source/fuzz/transformation_swap_conditional_branch_operands.cpp",
-    "source/fuzz/transformation_swap_conditional_branch_operands.h",
-    "source/fuzz/transformation_swap_function_variables.cpp",
-    "source/fuzz/transformation_swap_function_variables.h",
-    "source/fuzz/transformation_swap_two_functions.cpp",
-    "source/fuzz/transformation_swap_two_functions.h",
-    "source/fuzz/transformation_toggle_access_chain_instruction.cpp",
-    "source/fuzz/transformation_toggle_access_chain_instruction.h",
-    "source/fuzz/transformation_vector_shuffle.cpp",
-    "source/fuzz/transformation_vector_shuffle.h",
-    "source/fuzz/transformation_wrap_early_terminator_in_function.cpp",
-    "source/fuzz/transformation_wrap_early_terminator_in_function.h",
-    "source/fuzz/transformation_wrap_region_in_selection.cpp",
-    "source/fuzz/transformation_wrap_region_in_selection.h",
-    "source/fuzz/uniform_buffer_element_descriptor.cpp",
-    "source/fuzz/uniform_buffer_element_descriptor.h",
-  ]
-  deps = [
-    "//third_party/protobuf:protobuf_full",
-    ":spvtools_fuzz_proto",
-    ":spvtools",
-    ":spvtools_opt",
-  ]
-  public_deps = [ ":spvtools_headers" ]
-  if (build_with_chromium) {
+  # The spirv-fuzz library is only built when in a Chromium checkout
+  # due to its dependency on protobuf.
+
+  proto_library("spvtools_fuzz_proto") {
+    sources = [
+      "source/fuzz/protobufs/spvtoolsfuzz.proto",
+    ]
+    generate_python = false
+    use_protobuf_full = true
+  }
+
+  static_library("spvtools_fuzz") {
+    sources = [
+      "source/fuzz/added_function_reducer.cpp",
+      "source/fuzz/added_function_reducer.h",
+      "source/fuzz/available_instructions.cpp",
+      "source/fuzz/available_instructions.h",
+      "source/fuzz/call_graph.cpp",
+      "source/fuzz/call_graph.h",
+      "source/fuzz/comparator_deep_blocks_first.h",
+      "source/fuzz/counter_overflow_id_source.cpp",
+      "source/fuzz/counter_overflow_id_source.h",
+      "source/fuzz/data_descriptor.cpp",
+      "source/fuzz/data_descriptor.h",
+      "source/fuzz/equivalence_relation.h",
+      "source/fuzz/fact_manager/constant_uniform_facts.cpp",
+      "source/fuzz/fact_manager/constant_uniform_facts.h",
+      "source/fuzz/fact_manager/data_synonym_and_id_equation_facts.cpp",
+      "source/fuzz/fact_manager/data_synonym_and_id_equation_facts.h",
+      "source/fuzz/fact_manager/dead_block_facts.cpp",
+      "source/fuzz/fact_manager/dead_block_facts.h",
+      "source/fuzz/fact_manager/fact_manager.cpp",
+      "source/fuzz/fact_manager/fact_manager.h",
+      "source/fuzz/fact_manager/irrelevant_value_facts.cpp",
+      "source/fuzz/fact_manager/irrelevant_value_facts.h",
+      "source/fuzz/fact_manager/livesafe_function_facts.cpp",
+      "source/fuzz/fact_manager/livesafe_function_facts.h",
+      "source/fuzz/force_render_red.cpp",
+      "source/fuzz/force_render_red.h",
+      "source/fuzz/fuzzer.cpp",
+      "source/fuzz/fuzzer.h",
+      "source/fuzz/fuzzer_context.cpp",
+      "source/fuzz/fuzzer_context.h",
+      "source/fuzz/fuzzer_pass.cpp",
+      "source/fuzz/fuzzer_pass.h",
+      "source/fuzz/fuzzer_pass_add_access_chains.cpp",
+      "source/fuzz/fuzzer_pass_add_access_chains.h",
+      "source/fuzz/fuzzer_pass_add_bit_instruction_synonyms.cpp",
+      "source/fuzz/fuzzer_pass_add_bit_instruction_synonyms.h",
+      "source/fuzz/fuzzer_pass_add_composite_extract.cpp",
+      "source/fuzz/fuzzer_pass_add_composite_extract.h",
+      "source/fuzz/fuzzer_pass_add_composite_inserts.cpp",
+      "source/fuzz/fuzzer_pass_add_composite_inserts.h",
+      "source/fuzz/fuzzer_pass_add_composite_types.cpp",
+      "source/fuzz/fuzzer_pass_add_composite_types.h",
+      "source/fuzz/fuzzer_pass_add_copy_memory.cpp",
+      "source/fuzz/fuzzer_pass_add_copy_memory.h",
+      "source/fuzz/fuzzer_pass_add_dead_blocks.cpp",
+      "source/fuzz/fuzzer_pass_add_dead_blocks.h",
+      "source/fuzz/fuzzer_pass_add_dead_breaks.cpp",
+      "source/fuzz/fuzzer_pass_add_dead_breaks.h",
+      "source/fuzz/fuzzer_pass_add_dead_continues.cpp",
+      "source/fuzz/fuzzer_pass_add_dead_continues.h",
+      "source/fuzz/fuzzer_pass_add_equation_instructions.cpp",
+      "source/fuzz/fuzzer_pass_add_equation_instructions.h",
+      "source/fuzz/fuzzer_pass_add_function_calls.cpp",
+      "source/fuzz/fuzzer_pass_add_function_calls.h",
+      "source/fuzz/fuzzer_pass_add_global_variables.cpp",
+      "source/fuzz/fuzzer_pass_add_global_variables.h",
+      "source/fuzz/fuzzer_pass_add_image_sample_unused_components.cpp",
+      "source/fuzz/fuzzer_pass_add_image_sample_unused_components.h",
+      "source/fuzz/fuzzer_pass_add_loads.cpp",
+      "source/fuzz/fuzzer_pass_add_loads.h",
+      "source/fuzz/fuzzer_pass_add_local_variables.cpp",
+      "source/fuzz/fuzzer_pass_add_local_variables.h",
+      "source/fuzz/fuzzer_pass_add_loop_preheaders.cpp",
+      "source/fuzz/fuzzer_pass_add_loop_preheaders.h",
+      "source/fuzz/fuzzer_pass_add_loops_to_create_int_constant_synonyms.cpp",
+      "source/fuzz/fuzzer_pass_add_loops_to_create_int_constant_synonyms.h",
+      "source/fuzz/fuzzer_pass_add_no_contraction_decorations.cpp",
+      "source/fuzz/fuzzer_pass_add_no_contraction_decorations.h",
+      "source/fuzz/fuzzer_pass_add_opphi_synonyms.cpp",
+      "source/fuzz/fuzzer_pass_add_opphi_synonyms.h",
+      "source/fuzz/fuzzer_pass_add_parameters.cpp",
+      "source/fuzz/fuzzer_pass_add_parameters.h",
+      "source/fuzz/fuzzer_pass_add_relaxed_decorations.cpp",
+      "source/fuzz/fuzzer_pass_add_relaxed_decorations.h",
+      "source/fuzz/fuzzer_pass_add_stores.cpp",
+      "source/fuzz/fuzzer_pass_add_stores.h",
+      "source/fuzz/fuzzer_pass_add_synonyms.cpp",
+      "source/fuzz/fuzzer_pass_add_synonyms.h",
+      "source/fuzz/fuzzer_pass_add_vector_shuffle_instructions.cpp",
+      "source/fuzz/fuzzer_pass_add_vector_shuffle_instructions.h",
+      "source/fuzz/fuzzer_pass_adjust_branch_weights.cpp",
+      "source/fuzz/fuzzer_pass_adjust_branch_weights.h",
+      "source/fuzz/fuzzer_pass_adjust_function_controls.cpp",
+      "source/fuzz/fuzzer_pass_adjust_function_controls.h",
+      "source/fuzz/fuzzer_pass_adjust_loop_controls.cpp",
+      "source/fuzz/fuzzer_pass_adjust_loop_controls.h",
+      "source/fuzz/fuzzer_pass_adjust_memory_operands_masks.cpp",
+      "source/fuzz/fuzzer_pass_adjust_memory_operands_masks.h",
+      "source/fuzz/fuzzer_pass_adjust_selection_controls.cpp",
+      "source/fuzz/fuzzer_pass_adjust_selection_controls.h",
+      "source/fuzz/fuzzer_pass_apply_id_synonyms.cpp",
+      "source/fuzz/fuzzer_pass_apply_id_synonyms.h",
+      "source/fuzz/fuzzer_pass_construct_composites.cpp",
+      "source/fuzz/fuzzer_pass_construct_composites.h",
+      "source/fuzz/fuzzer_pass_copy_objects.cpp",
+      "source/fuzz/fuzzer_pass_copy_objects.h",
+      "source/fuzz/fuzzer_pass_donate_modules.cpp",
+      "source/fuzz/fuzzer_pass_donate_modules.h",
+      "source/fuzz/fuzzer_pass_duplicate_regions_with_selections.cpp",
+      "source/fuzz/fuzzer_pass_duplicate_regions_with_selections.h",
+      "source/fuzz/fuzzer_pass_expand_vector_reductions.cpp",
+      "source/fuzz/fuzzer_pass_expand_vector_reductions.h",
+      "source/fuzz/fuzzer_pass_flatten_conditional_branches.cpp",
+      "source/fuzz/fuzzer_pass_flatten_conditional_branches.h",
+      "source/fuzz/fuzzer_pass_inline_functions.cpp",
+      "source/fuzz/fuzzer_pass_inline_functions.h",
+      "source/fuzz/fuzzer_pass_interchange_signedness_of_integer_operands.cpp",
+      "source/fuzz/fuzzer_pass_interchange_signedness_of_integer_operands.h",
+      "source/fuzz/fuzzer_pass_interchange_zero_like_constants.cpp",
+      "source/fuzz/fuzzer_pass_interchange_zero_like_constants.h",
+      "source/fuzz/fuzzer_pass_invert_comparison_operators.cpp",
+      "source/fuzz/fuzzer_pass_invert_comparison_operators.h",
+      "source/fuzz/fuzzer_pass_make_vector_operations_dynamic.cpp",
+      "source/fuzz/fuzzer_pass_make_vector_operations_dynamic.h",
+      "source/fuzz/fuzzer_pass_merge_blocks.cpp",
+      "source/fuzz/fuzzer_pass_merge_blocks.h",
+      "source/fuzz/fuzzer_pass_merge_function_returns.cpp",
+      "source/fuzz/fuzzer_pass_merge_function_returns.h",
+      "source/fuzz/fuzzer_pass_mutate_pointers.cpp",
+      "source/fuzz/fuzzer_pass_mutate_pointers.h",
+      "source/fuzz/fuzzer_pass_obfuscate_constants.cpp",
+      "source/fuzz/fuzzer_pass_obfuscate_constants.h",
+      "source/fuzz/fuzzer_pass_outline_functions.cpp",
+      "source/fuzz/fuzzer_pass_outline_functions.h",
+      "source/fuzz/fuzzer_pass_permute_blocks.cpp",
+      "source/fuzz/fuzzer_pass_permute_blocks.h",
+      "source/fuzz/fuzzer_pass_permute_function_parameters.cpp",
+      "source/fuzz/fuzzer_pass_permute_function_parameters.h",
+      "source/fuzz/fuzzer_pass_permute_function_variables.cpp",
+      "source/fuzz/fuzzer_pass_permute_function_variables.h",
+      "source/fuzz/fuzzer_pass_permute_instructions.cpp",
+      "source/fuzz/fuzzer_pass_permute_instructions.h",
+      "source/fuzz/fuzzer_pass_permute_phi_operands.cpp",
+      "source/fuzz/fuzzer_pass_permute_phi_operands.h",
+      "source/fuzz/fuzzer_pass_propagate_instructions_down.cpp",
+      "source/fuzz/fuzzer_pass_propagate_instructions_down.h",
+      "source/fuzz/fuzzer_pass_propagate_instructions_up.cpp",
+      "source/fuzz/fuzzer_pass_propagate_instructions_up.h",
+      "source/fuzz/fuzzer_pass_push_ids_through_variables.cpp",
+      "source/fuzz/fuzzer_pass_push_ids_through_variables.h",
+      "source/fuzz/fuzzer_pass_replace_adds_subs_muls_with_carrying_extended.cpp",
+      "source/fuzz/fuzzer_pass_replace_adds_subs_muls_with_carrying_extended.h",
+      "source/fuzz/fuzzer_pass_replace_branches_from_dead_blocks_with_exits.cpp",
+      "source/fuzz/fuzzer_pass_replace_branches_from_dead_blocks_with_exits.h",
+      "source/fuzz/fuzzer_pass_replace_copy_memories_with_loads_stores.cpp",
+      "source/fuzz/fuzzer_pass_replace_copy_memories_with_loads_stores.h",
+      "source/fuzz/fuzzer_pass_replace_copy_objects_with_stores_loads.cpp",
+      "source/fuzz/fuzzer_pass_replace_copy_objects_with_stores_loads.h",
+      "source/fuzz/fuzzer_pass_replace_irrelevant_ids.cpp",
+      "source/fuzz/fuzzer_pass_replace_irrelevant_ids.h",
+      "source/fuzz/fuzzer_pass_replace_linear_algebra_instructions.cpp",
+      "source/fuzz/fuzzer_pass_replace_linear_algebra_instructions.h",
+      "source/fuzz/fuzzer_pass_replace_loads_stores_with_copy_memories.cpp",
+      "source/fuzz/fuzzer_pass_replace_loads_stores_with_copy_memories.h",
+      "source/fuzz/fuzzer_pass_replace_opphi_ids_from_dead_predecessors.cpp",
+      "source/fuzz/fuzzer_pass_replace_opphi_ids_from_dead_predecessors.h",
+      "source/fuzz/fuzzer_pass_replace_opselects_with_conditional_branches.cpp",
+      "source/fuzz/fuzzer_pass_replace_opselects_with_conditional_branches.h",
+      "source/fuzz/fuzzer_pass_replace_parameter_with_global.cpp",
+      "source/fuzz/fuzzer_pass_replace_parameter_with_global.h",
+      "source/fuzz/fuzzer_pass_replace_params_with_struct.cpp",
+      "source/fuzz/fuzzer_pass_replace_params_with_struct.h",
+      "source/fuzz/fuzzer_pass_split_blocks.cpp",
+      "source/fuzz/fuzzer_pass_split_blocks.h",
+      "source/fuzz/fuzzer_pass_swap_commutable_operands.cpp",
+      "source/fuzz/fuzzer_pass_swap_commutable_operands.h",
+      "source/fuzz/fuzzer_pass_swap_conditional_branch_operands.cpp",
+      "source/fuzz/fuzzer_pass_swap_conditional_branch_operands.h",
+      "source/fuzz/fuzzer_pass_swap_functions.cpp",
+      "source/fuzz/fuzzer_pass_swap_functions.h",
+      "source/fuzz/fuzzer_pass_toggle_access_chain_instruction.cpp",
+      "source/fuzz/fuzzer_pass_toggle_access_chain_instruction.h",
+      "source/fuzz/fuzzer_pass_wrap_regions_in_selections.cpp",
+      "source/fuzz/fuzzer_pass_wrap_regions_in_selections.h",
+      "source/fuzz/fuzzer_util.cpp",
+      "source/fuzz/fuzzer_util.h",
+      "source/fuzz/id_use_descriptor.cpp",
+      "source/fuzz/id_use_descriptor.h",
+      "source/fuzz/instruction_descriptor.cpp",
+      "source/fuzz/instruction_descriptor.h",
+      "source/fuzz/instruction_message.cpp",
+      "source/fuzz/instruction_message.h",
+      "source/fuzz/overflow_id_source.cpp",
+      "source/fuzz/overflow_id_source.h",
+      "source/fuzz/pass_management/repeated_pass_instances.h",
+      "source/fuzz/pass_management/repeated_pass_manager.cpp",
+      "source/fuzz/pass_management/repeated_pass_manager.h",
+      "source/fuzz/pass_management/repeated_pass_manager_looped_with_recommendations.cpp",
+      "source/fuzz/pass_management/repeated_pass_manager_looped_with_recommendations.h",
+      "source/fuzz/pass_management/repeated_pass_manager_random_with_recommendations.cpp",
+      "source/fuzz/pass_management/repeated_pass_manager_random_with_recommendations.h",
+      "source/fuzz/pass_management/repeated_pass_manager_simple.cpp",
+      "source/fuzz/pass_management/repeated_pass_manager_simple.h",
+      "source/fuzz/pass_management/repeated_pass_recommender.cpp",
+      "source/fuzz/pass_management/repeated_pass_recommender.h",
+      "source/fuzz/pass_management/repeated_pass_recommender_standard.cpp",
+      "source/fuzz/pass_management/repeated_pass_recommender_standard.h",
+      "source/fuzz/protobufs/spirvfuzz_protobufs.h",
+      "source/fuzz/pseudo_random_generator.cpp",
+      "source/fuzz/pseudo_random_generator.h",
+      "source/fuzz/random_generator.cpp",
+      "source/fuzz/random_generator.h",
+      "source/fuzz/replayer.cpp",
+      "source/fuzz/replayer.h",
+      "source/fuzz/shrinker.cpp",
+      "source/fuzz/shrinker.h",
+      "source/fuzz/transformation.cpp",
+      "source/fuzz/transformation.h",
+      "source/fuzz/transformation_access_chain.cpp",
+      "source/fuzz/transformation_access_chain.h",
+      "source/fuzz/transformation_add_bit_instruction_synonym.cpp",
+      "source/fuzz/transformation_add_bit_instruction_synonym.h",
+      "source/fuzz/transformation_add_constant_boolean.cpp",
+      "source/fuzz/transformation_add_constant_boolean.h",
+      "source/fuzz/transformation_add_constant_composite.cpp",
+      "source/fuzz/transformation_add_constant_composite.h",
+      "source/fuzz/transformation_add_constant_null.cpp",
+      "source/fuzz/transformation_add_constant_null.h",
+      "source/fuzz/transformation_add_constant_scalar.cpp",
+      "source/fuzz/transformation_add_constant_scalar.h",
+      "source/fuzz/transformation_add_copy_memory.cpp",
+      "source/fuzz/transformation_add_copy_memory.h",
+      "source/fuzz/transformation_add_dead_block.cpp",
+      "source/fuzz/transformation_add_dead_block.h",
+      "source/fuzz/transformation_add_dead_break.cpp",
+      "source/fuzz/transformation_add_dead_break.h",
+      "source/fuzz/transformation_add_dead_continue.cpp",
+      "source/fuzz/transformation_add_dead_continue.h",
+      "source/fuzz/transformation_add_early_terminator_wrapper.cpp",
+      "source/fuzz/transformation_add_early_terminator_wrapper.h",
+      "source/fuzz/transformation_add_function.cpp",
+      "source/fuzz/transformation_add_function.h",
+      "source/fuzz/transformation_add_global_undef.cpp",
+      "source/fuzz/transformation_add_global_undef.h",
+      "source/fuzz/transformation_add_global_variable.cpp",
+      "source/fuzz/transformation_add_global_variable.h",
+      "source/fuzz/transformation_add_image_sample_unused_components.cpp",
+      "source/fuzz/transformation_add_image_sample_unused_components.h",
+      "source/fuzz/transformation_add_local_variable.cpp",
+      "source/fuzz/transformation_add_local_variable.h",
+      "source/fuzz/transformation_add_loop_preheader.cpp",
+      "source/fuzz/transformation_add_loop_preheader.h",
+      "source/fuzz/transformation_add_loop_to_create_int_constant_synonym.cpp",
+      "source/fuzz/transformation_add_loop_to_create_int_constant_synonym.h",
+      "source/fuzz/transformation_add_no_contraction_decoration.cpp",
+      "source/fuzz/transformation_add_no_contraction_decoration.h",
+      "source/fuzz/transformation_add_opphi_synonym.cpp",
+      "source/fuzz/transformation_add_opphi_synonym.h",
+      "source/fuzz/transformation_add_parameter.cpp",
+      "source/fuzz/transformation_add_parameter.h",
+      "source/fuzz/transformation_add_relaxed_decoration.cpp",
+      "source/fuzz/transformation_add_relaxed_decoration.h",
+      "source/fuzz/transformation_add_spec_constant_op.cpp",
+      "source/fuzz/transformation_add_spec_constant_op.h",
+      "source/fuzz/transformation_add_synonym.cpp",
+      "source/fuzz/transformation_add_synonym.h",
+      "source/fuzz/transformation_add_type_array.cpp",
+      "source/fuzz/transformation_add_type_array.h",
+      "source/fuzz/transformation_add_type_boolean.cpp",
+      "source/fuzz/transformation_add_type_boolean.h",
+      "source/fuzz/transformation_add_type_float.cpp",
+      "source/fuzz/transformation_add_type_float.h",
+      "source/fuzz/transformation_add_type_function.cpp",
+      "source/fuzz/transformation_add_type_function.h",
+      "source/fuzz/transformation_add_type_int.cpp",
+      "source/fuzz/transformation_add_type_int.h",
+      "source/fuzz/transformation_add_type_matrix.cpp",
+      "source/fuzz/transformation_add_type_matrix.h",
+      "source/fuzz/transformation_add_type_pointer.cpp",
+      "source/fuzz/transformation_add_type_pointer.h",
+      "source/fuzz/transformation_add_type_struct.cpp",
+      "source/fuzz/transformation_add_type_struct.h",
+      "source/fuzz/transformation_add_type_vector.cpp",
+      "source/fuzz/transformation_add_type_vector.h",
+      "source/fuzz/transformation_adjust_branch_weights.cpp",
+      "source/fuzz/transformation_adjust_branch_weights.h",
+      "source/fuzz/transformation_composite_construct.cpp",
+      "source/fuzz/transformation_composite_construct.h",
+      "source/fuzz/transformation_composite_extract.cpp",
+      "source/fuzz/transformation_composite_extract.h",
+      "source/fuzz/transformation_composite_insert.cpp",
+      "source/fuzz/transformation_composite_insert.h",
+      "source/fuzz/transformation_compute_data_synonym_fact_closure.cpp",
+      "source/fuzz/transformation_compute_data_synonym_fact_closure.h",
+      "source/fuzz/transformation_context.cpp",
+      "source/fuzz/transformation_context.h",
+      "source/fuzz/transformation_duplicate_region_with_selection.cpp",
+      "source/fuzz/transformation_duplicate_region_with_selection.h",
+      "source/fuzz/transformation_equation_instruction.cpp",
+      "source/fuzz/transformation_equation_instruction.h",
+      "source/fuzz/transformation_expand_vector_reduction.cpp",
+      "source/fuzz/transformation_expand_vector_reduction.h",
+      "source/fuzz/transformation_flatten_conditional_branch.cpp",
+      "source/fuzz/transformation_flatten_conditional_branch.h",
+      "source/fuzz/transformation_function_call.cpp",
+      "source/fuzz/transformation_function_call.h",
+      "source/fuzz/transformation_inline_function.cpp",
+      "source/fuzz/transformation_inline_function.h",
+      "source/fuzz/transformation_invert_comparison_operator.cpp",
+      "source/fuzz/transformation_invert_comparison_operator.h",
+      "source/fuzz/transformation_load.cpp",
+      "source/fuzz/transformation_load.h",
+      "source/fuzz/transformation_make_vector_operation_dynamic.cpp",
+      "source/fuzz/transformation_make_vector_operation_dynamic.h",
+      "source/fuzz/transformation_merge_blocks.cpp",
+      "source/fuzz/transformation_merge_blocks.h",
+      "source/fuzz/transformation_merge_function_returns.cpp",
+      "source/fuzz/transformation_merge_function_returns.h",
+      "source/fuzz/transformation_move_block_down.cpp",
+      "source/fuzz/transformation_move_block_down.h",
+      "source/fuzz/transformation_move_instruction_down.cpp",
+      "source/fuzz/transformation_move_instruction_down.h",
+      "source/fuzz/transformation_mutate_pointer.cpp",
+      "source/fuzz/transformation_mutate_pointer.h",
+      "source/fuzz/transformation_outline_function.cpp",
+      "source/fuzz/transformation_outline_function.h",
+      "source/fuzz/transformation_permute_function_parameters.cpp",
+      "source/fuzz/transformation_permute_function_parameters.h",
+      "source/fuzz/transformation_permute_phi_operands.cpp",
+      "source/fuzz/transformation_permute_phi_operands.h",
+      "source/fuzz/transformation_propagate_instruction_down.cpp",
+      "source/fuzz/transformation_propagate_instruction_down.h",
+      "source/fuzz/transformation_propagate_instruction_up.cpp",
+      "source/fuzz/transformation_propagate_instruction_up.h",
+      "source/fuzz/transformation_push_id_through_variable.cpp",
+      "source/fuzz/transformation_push_id_through_variable.h",
+      "source/fuzz/transformation_record_synonymous_constants.cpp",
+      "source/fuzz/transformation_record_synonymous_constants.h",
+      "source/fuzz/transformation_replace_add_sub_mul_with_carrying_extended.cpp",
+      "source/fuzz/transformation_replace_add_sub_mul_with_carrying_extended.h",
+      "source/fuzz/transformation_replace_boolean_constant_with_constant_binary.cpp",
+      "source/fuzz/transformation_replace_boolean_constant_with_constant_binary.h",
+      "source/fuzz/transformation_replace_branch_from_dead_block_with_exit.cpp",
+      "source/fuzz/transformation_replace_branch_from_dead_block_with_exit.h",
+      "source/fuzz/transformation_replace_constant_with_uniform.cpp",
+      "source/fuzz/transformation_replace_constant_with_uniform.h",
+      "source/fuzz/transformation_replace_copy_memory_with_load_store.cpp",
+      "source/fuzz/transformation_replace_copy_memory_with_load_store.h",
+      "source/fuzz/transformation_replace_copy_object_with_store_load.cpp",
+      "source/fuzz/transformation_replace_copy_object_with_store_load.h",
+      "source/fuzz/transformation_replace_id_with_synonym.cpp",
+      "source/fuzz/transformation_replace_id_with_synonym.h",
+      "source/fuzz/transformation_replace_irrelevant_id.cpp",
+      "source/fuzz/transformation_replace_irrelevant_id.h",
+      "source/fuzz/transformation_replace_linear_algebra_instruction.cpp",
+      "source/fuzz/transformation_replace_linear_algebra_instruction.h",
+      "source/fuzz/transformation_replace_load_store_with_copy_memory.cpp",
+      "source/fuzz/transformation_replace_load_store_with_copy_memory.h",
+      "source/fuzz/transformation_replace_opphi_id_from_dead_predecessor.cpp",
+      "source/fuzz/transformation_replace_opphi_id_from_dead_predecessor.h",
+      "source/fuzz/transformation_replace_opselect_with_conditional_branch.cpp",
+      "source/fuzz/transformation_replace_opselect_with_conditional_branch.h",
+      "source/fuzz/transformation_replace_parameter_with_global.cpp",
+      "source/fuzz/transformation_replace_parameter_with_global.h",
+      "source/fuzz/transformation_replace_params_with_struct.cpp",
+      "source/fuzz/transformation_replace_params_with_struct.h",
+      "source/fuzz/transformation_set_function_control.cpp",
+      "source/fuzz/transformation_set_function_control.h",
+      "source/fuzz/transformation_set_loop_control.cpp",
+      "source/fuzz/transformation_set_loop_control.h",
+      "source/fuzz/transformation_set_memory_operands_mask.cpp",
+      "source/fuzz/transformation_set_memory_operands_mask.h",
+      "source/fuzz/transformation_set_selection_control.cpp",
+      "source/fuzz/transformation_set_selection_control.h",
+      "source/fuzz/transformation_split_block.cpp",
+      "source/fuzz/transformation_split_block.h",
+      "source/fuzz/transformation_store.cpp",
+      "source/fuzz/transformation_store.h",
+      "source/fuzz/transformation_swap_commutable_operands.cpp",
+      "source/fuzz/transformation_swap_commutable_operands.h",
+      "source/fuzz/transformation_swap_conditional_branch_operands.cpp",
+      "source/fuzz/transformation_swap_conditional_branch_operands.h",
+      "source/fuzz/transformation_swap_function_variables.cpp",
+      "source/fuzz/transformation_swap_function_variables.h",
+      "source/fuzz/transformation_swap_two_functions.cpp",
+      "source/fuzz/transformation_swap_two_functions.h",
+      "source/fuzz/transformation_toggle_access_chain_instruction.cpp",
+      "source/fuzz/transformation_toggle_access_chain_instruction.h",
+      "source/fuzz/transformation_vector_shuffle.cpp",
+      "source/fuzz/transformation_vector_shuffle.h",
+      "source/fuzz/transformation_wrap_early_terminator_in_function.cpp",
+      "source/fuzz/transformation_wrap_early_terminator_in_function.h",
+      "source/fuzz/transformation_wrap_region_in_selection.cpp",
+      "source/fuzz/transformation_wrap_region_in_selection.h",
+      "source/fuzz/uniform_buffer_element_descriptor.cpp",
+      "source/fuzz/uniform_buffer_element_descriptor.h",
+    ]
+    deps = [
+      "//third_party/protobuf:protobuf_full",
+      ":spvtools_fuzz_proto",
+      ":spvtools",
+      ":spvtools_opt",
+    ]
+    public_deps = [ ":spvtools_headers" ]
     configs -= [ "//build/config/compiler:chromium_code" ]
     configs += [ "//build/config/compiler:no_chromium_code" ]
+    configs += [ ":spvtools_internal_config" ]
   }
-  configs += [ ":spvtools_internal_config" ]
 }
 
 group("SPIRV-Tools") {
@@ -1476,10 +1480,11 @@
   configs += [ ":spvtools_internal_config" ]
 }
 
-if (!is_ios && !spirv_is_winuwp) {
+if (!is_ios && !spirv_is_winuwp && build_with_chromium) {
 
-  # iOS and UWP do not allow std::system calls which spirv-fuzz and
-  # spirv-reduce require
+  # iOS and UWP do not allow std::system calls which spirv-fuzz
+  # requires. Additionally, spirv-fuzz is only built when in a
+  # Chromium checkout due to its dependency on protobuf.
 
   executable("spirv-fuzz") {
     sources = [ "tools/fuzz/fuzz.cpp" ]
@@ -1495,6 +1500,12 @@
     ]
     configs += [ ":spvtools_internal_config" ]
   }
+}
+
+if (!is_ios && !spirv_is_winuwp) {
+
+  # iOS and UWP do not allow std::system calls which spirv-reduce
+  # requires.
 
   executable("spirv-reduce") {
     sources = [ "tools/reduce/reduce.cpp" ]
@@ -1519,10 +1530,10 @@
     ":spirv-opt",
     ":spirv-val",
   ]
+  if (!is_ios && !spirv_is_winuwp && build_with_chromium) {
+    deps += [ ":spirv-fuzz" ]
+  }
   if (!is_ios && !spirv_is_winuwp) {
-    deps += [
-      ":spirv-fuzz",
-      ":spirv-reduce",
-    ]
+    deps += [ ":spirv-reduce" ]
   }
 }