Refactored GLContext to own GPUTiming which spawn GPUTimingClients.

ui/gl/gl_context.cc

 // Copyright (c) 2012 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 <string>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/threading/thread_local.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_gl_api_implementation.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_surface.h"
 #include "ui/gl/gl_switches.h"
 #include "ui/gl/gl_version_info.h"
+#include "ui/gl/gpu_timing.h"
 
 namespace gfx {
 
 namespace {
 base::LazyInstance<base::ThreadLocalPointer<GLContext> >::Leaky
     current_context_ = LAZY_INSTANCE_INITIALIZER;
 
 base::LazyInstance<base::ThreadLocalPointer<GLContext> >::Leaky
     current_real_context_ = LAZY_INSTANCE_INITIALIZER;
 }  // namespace
@@ skipping 77 matching lines @@
 const GLVersionInfo* GLContext::GetVersionInfo() {
   if(!version_info_) {
     std::string version = GetGLVersion();
     std::string renderer = GetGLRenderer();
     version_info_ =
         make_scoped_ptr(new GLVersionInfo(version.c_str(), renderer.c_str()));
   }
   return version_info_.get();
 }
 
+gpu::GPUTiming* GLContext::GetGPUTiming() {
+  if (!gpu_timing_) {
+    gpu_timing_ = make_scoped_ptr(new gpu::GPUTiming(this));
+  }
+  return gpu_timing_.get();
+}
+
 GLShareGroup* GLContext::share_group() {
   return share_group_.get();
 }
 
 bool GLContext::LosesAllContextsOnContextLost() {
   switch (GetGLImplementation()) {
     case kGLImplementationDesktopGL:
       return false;
     case kGLImplementationEGLGLES2:
       return true;
@@ skipping 88 matching lines @@
     : GLContext(share_group) {}
 
 GLContextReal::~GLContextReal() {}
 
 void GLContextReal::SetCurrent(GLSurface* surface) {
   GLContext::SetCurrent(surface);
   current_real_context_.Pointer()->Set(surface ? this : NULL);
 }
 
 }  // namespace gfx