Add trace events to measure GPU process startup timing and time to first present.

content/renderer/render_thread_impl.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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 748 matching lines @@
   if (!success)
     return scoped_ptr<base::SharedMemory>();
 
   if (!base::SharedMemory::IsHandleValid(handle))
     return scoped_ptr<base::SharedMemory>();
   return scoped_ptr<base::SharedMemory>(new base::SharedMemory(handle, false));
 }
 
 int32 RenderThreadImpl::CreateViewCommandBuffer(
       int32 surface_id, const GPUCreateCommandBufferConfig& init_params) {
+  TRACE_EVENT1("gpu",
+               "RenderThreadImpl::CreateViewCommandBuffer",
+               "surface_id",
+               surface_id);
+
   int32 route_id = MSG_ROUTING_NONE;
   IPC::Message* message = new GpuHostMsg_CreateViewCommandBuffer(
       surface_id,
       init_params,
       &route_id);
 
   // Allow calling this from the compositor thread.
   if (MessageLoop::current() == message_loop())
     ChildThread::Send(message);
   else
@@ skipping 98 matching lines @@
       false,
       params.swapped_out,
       params.next_page_id,
       params.screen_info,
       false,
       params.accessibility_mode);
 }
 
 GpuChannelHost* RenderThreadImpl::EstablishGpuChannelSync(
     content::CauseForGpuLaunch cause_for_gpu_launch) {
+  TRACE_EVENT0("gpu", "RenderThreadImpl::EstablishGpuChannelSync");
+
   if (gpu_channel_.get()) {
     // Do nothing if we already have a GPU channel or are already
     // establishing one.
     if (gpu_channel_->state() == GpuChannelHost::kUnconnected ||
         gpu_channel_->state() == GpuChannelHost::kConnected)
       return GetGpuChannel();
 
     // Recreate the channel if it has been lost.
     gpu_channel_ = NULL;
   }
@@ skipping 69 matching lines @@
 
 scoped_refptr<base::MessageLoopProxy>
 RenderThreadImpl::GetFileThreadMessageLoopProxy() {
   DCHECK(message_loop() == MessageLoop::current());
   if (!file_thread_.get()) {
     file_thread_.reset(new base::Thread("Renderer::FILE"));
     file_thread_->Start();
   }
   return file_thread_->message_loop_proxy();
 }