Fix Android roll.

The GN->Android.bp script runs with target_cpu="none",
but Android needs SkJumper_generated.S.  Just skip it
explicitly for WASM.

Change-Id: I07b9761c591d48198460ce6300ed3bc9fd02a487
Reviewed-on: https://skia-review.googlesource.com/49903
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
diff --git a/gn/core.gni b/gn/core.gni
index 79498b4..1415b5f 100644
--- a/gn/core.gni
+++ b/gn/core.gni
@@ -530,7 +530,6 @@
     # assembler situation is figured out, https://crbug.com/762167
     skia_core_defines += [ "SK_JUMPER_USE_ASSEMBLY=0" ]
   }
-} else if (target_cpu == "arm" || target_cpu == "arm64" ||
-           target_cpu == "x86" || target_cpu == "x64") {
+} else if (target_cpu != "wasm") {
   skia_core_sources += [ "$_src/jumper/SkJumper_generated.S" ]
 }