Make ShaderTranslatorCache thread safe

gpu/command_buffer/service/gles2_cmd_decoder_mock.h

Index: gpu/command_buffer/service/gles2_cmd_decoder_mock.h
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_mock.h b/gpu/command_buffer/service/gles2_cmd_decoder_mock.h
index ff678c94280da4962bc6ea19b4142bab9358d636..fd91d3ce48d0a4a327323e3fe550a99d6ba6443d 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_mock.h
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_mock.h
@@ -33,13 +33,15 @@ class MockGLES2Decoder : public GLES2Decoder {
   MockGLES2Decoder();
   virtual ~MockGLES2Decoder();
 
-  MOCK_METHOD6(Initialize,
-               bool(const scoped_refptr<gfx::GLSurface>& surface,
-                    const scoped_refptr<gfx::GLContext>& context,
-                    bool offscreen,
-                    const gfx::Size& size,
-                    const DisallowedFeatures& disallowed_features,
-                    const std::vector<int32>& attribs));
+  MOCK_METHOD7(
+      Initialize,
+      bool(const scoped_refptr<gfx::GLSurface>& surface,
+           const scoped_refptr<gfx::GLContext>& context,
+           const scoped_refptr<ShaderTranslatorCache>& shader_translator_cache,
+           bool offscreen,
+           const gfx::Size& size,
+           const DisallowedFeatures& disallowed_features,
+           const std::vector<int32>& attribs));
   MOCK_METHOD1(Destroy, void(bool have_context));
   MOCK_METHOD1(SetSurface, void(const scoped_refptr<gfx::GLSurface>& surface));
   MOCK_METHOD1(ProduceFrontBuffer, void(const Mailbox& mailbox));