Record task durations on Renderer Main & Compositor threads.

content/renderer/renderer_main.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 <stddef.h>
 #include <utility>
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
 #include "base/debug/leak_annotations.h"
 #include "base/i18n/rtl.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/pending_task.h"
 #include "base/run_loop.h"
 #include "base/strings/string_util.h"
 #include "base/sys_info.h"
 #include "base/threading/platform_thread.h"
 #include "base/timer/hi_res_timer_manager.h"
 #include "base/trace_event/trace_event.h"
+#include "base/tracked_objects.h"
 #include "build/build_config.h"
 #include "content/child/child_process.h"
 #include "content/common/content_constants_internal.h"
 #include "content/common/service_manager/service_manager_connection_impl.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/renderer/render_process_impl.h"
 #include "content/renderer/render_thread_impl.h"
 #include "content/renderer/renderer_main_platform_delegate.h"
@@ skipping 122 matching lines @@
   // http://crbug.com/306348#c24 for details.
   std::unique_ptr<base::MessagePump> pump(new base::MessagePumpNSRunLoop());
   std::unique_ptr<base::MessageLoop> main_message_loop(
       new base::MessageLoop(std::move(pump)));
 #else
   // The main message loop of the renderer services doesn't have IO or UI tasks.
   std::unique_ptr<base::MessageLoop> main_message_loop(new base::MessageLoop());
 #endif
 
   base::PlatformThread::SetName("CrRendererMain");
+  tracked_objects::ThreadData::Get()->EnableTaskDurationRecordingForUMA();
 
   bool no_sandbox = parsed_command_line.HasSwitch(switches::kNoSandbox);
 
   // Initialize histogram statistics gathering system.
   base::StatisticsRecorder::Initialize();
 
 #if defined(OS_ANDROID)
   // If we have any pending LibraryLoader histograms, record them.
   base::android::RecordLibraryLoaderRendererHistograms();
 #endif
@@ skipping 50 matching lines @@
     // ignore shutdown-only leaks.
     __lsan_do_leak_check();
 #endif
   }
   platform.PlatformUninitialize();
   TRACE_EVENT_ASYNC_END0("startup", "RendererMain", 0);
   return 0;
 }
 
 }  // namespace content