Always local fallback for message_names.cc

scripts/slave/compile.py

Index: scripts/slave/compile.py
diff --git a/scripts/slave/compile.py b/scripts/slave/compile.py
index 8ad7685dee42da8bb18ba6fb47fd14e0a8b3e678..61eb08be8904d75fd55cac7705ddb9dee5dea13e 100755
--- a/scripts/slave/compile.py
+++ b/scripts/slave/compile.py
@@ -110,6 +110,13 @@ def goma_setup(options, env):
   env['GOMA_DEPS_CACHE_DIR'] = (
       options.goma_deps_cache_dir or options.target_output_dir)
 
+  # HACK(shinyak): Workaround for crbug.com/630502. Compiling
+  # tools/ipc_fuzzer/message_lib/message_names.cc is always slow on Mac.
+  # TODO(shinyak): Remove this when gn configuration is fixed.
+  if chromium_utils.IsMac():
+    env['GOMA_FALLBACK_INPUT_FILES'] = (
+        '../../tools/ipc_fuzzer/message_lib/message_names.cc')
+
   if options.goma_hermetic:
     env['GOMA_HERMETIC'] = options.goma_hermetic
   if options.goma_enable_remote_link: