Introduce gpu_trace_event for gpu performance analysis.

chrome/browser/gpu_process_host_ui_shim.cc

 // TODO(jam): move this file to src/content once we have an interface that the
 // embedder provides.  We can then use it to get the resource and resize the
 // window.
 // 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 "chrome/browser/gpu_process_host_ui_shim.h"
 
 #include "base/id_map.h"
 #include "chrome/browser/gpu_data_manager.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/gpu_process_host.h"
 #include "content/browser/renderer_host/render_process_host.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/renderer_host/render_widget_host_view.h"
 #include "content/common/gpu_messages.h"
+#include "gpu/common/gpu_trace_event.h"
 
 #if defined(OS_LINUX)
 // These two #includes need to come after gpu_messages.h.
 #include <gdk/gdkwindow.h>  // NOLINT
 #include <gdk/gdkx.h>  // NOLINT
 #include "ui/base/x/x11_util.h"
 #include "ui/gfx/gtk_native_view_id_manager.h"
 #include "ui/gfx/size.h"
 #endif  // defined(OS_LINUX)
 
@@ skipping 226 matching lines @@
   if (message.routing_id() != MSG_ROUTING_CONTROL)
     return false;
 
   return OnControlMessageReceived(message);
 }
 
 void GpuProcessHostUIShim::EstablishGpuChannel(
     int renderer_id,
     EstablishChannelCallback *callback) {
   DCHECK(CalledOnValidThread());
+  GPU_TRACE_EVENT0("gpu", "GpuProcessHostUIShim::EstablishGpuChannel");
   linked_ptr<EstablishChannelCallback> wrapped_callback(callback);
 
   // If GPU features are already blacklisted, no need to establish the channel.
   if (gpu_data_manager_->GetGpuFeatureFlags().flags() != 0) {
     EstablishChannelError(
         wrapped_callback.release(), IPC::ChannelHandle(), NULL, GPUInfo());
     return;
   }
 
   if (Send(new GpuMsg_EstablishChannel(renderer_id))) {
@@ skipping 255 matching lines @@
     int render_view_id) {
   RenderViewHost* host = RenderViewHost::FromID(renderer_id,
                                                 render_view_id);
   if (!host) {
     return;
   }
   host->ScheduleComposite();
 }
 
 #endif
-