add "did it run on GPU" check to frame_rate_tests.cc using AutomationProxy tracing feature

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 2032 matching lines @@
 #elif defined(OS_WIN)
     if (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2)
       needs_glsl_built_in_function_emulation_ = true;
 #endif
   }
 
   if (!InitializeShaderTranslator()) {
     return false;
   }
 
+  // TRACE_EVENT for gpu tests:
+  TRACE_EVENT_INSTANT1("test_gpu", "GLES2DecoderImpl::Initialize", "GLImpl",
+                       static_cast<int>(gfx::GetGLImplementation()));
+
   return true;
 }
 
 void GLES2DecoderImpl::UpdateCapabilities() {
   util_.set_num_compressed_texture_formats(
       validators_->compressed_texture_format.GetValues().size());
   util_.set_num_shader_binary_formats(
       validators_->shader_binary_format.GetValues().size());
 }
 
@@ skipping 5337 matching lines @@
   return error::kNoError;
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu