Use GLVersionInfo instead of gl::GetGLImplementation() to decide GL paths

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 98c47159a066a2c57dcec26161866cb8c6d238d7..2a04be71b69d5f78c5cf1b20f064b34283a28bdd 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_mock.h
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_mock.h
@@ -65,6 +65,7 @@ class MockGLES2Decoder : public GLES2Decoder {
   MOCK_METHOD0(GetGLSurface, gl::GLSurface*());
   MOCK_METHOD0(GetGLContext, gl::GLContext*());
   MOCK_METHOD0(GetContextGroup, ContextGroup*());
+  MOCK_CONST_METHOD0(GetFeatureInfo, const FeatureInfo*());
   MOCK_METHOD0(GetContextState, const ContextState*());
   MOCK_METHOD1(GetTranslator,
                scoped_refptr<ShaderTranslatorInterface>(unsigned int type));