Add dependency for fuchsia vulkan headers

Test:
Fuchsia build compiles.

Change-Id: I99386349377c4ae68feb974b4717c03282697227
Reviewed-on: https://skia-review.googlesource.com/c/177560
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index 42cc2c8..43535804 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -655,6 +655,9 @@
     if (skia_enable_vulkan_debug_layers) {
       public_defines += [ "SK_ENABLE_VK_LAYERS" ]
     }
+    if (is_fuchsia) {
+      public_deps += [ "//third_party/vulkan_loader_and_validation_layers:vulkan" ]
+    }
   }
 
   if (skia_enable_spirv_validation) {