Add UMA for High Resolution Timer Usage

content/gpu/gpu_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 <stdlib.h>
 
 #include <memory>
 #include <utility>
 
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/rand_util.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
 #include "base/threading/platform_thread.h"
+#include "base/timer/hi_res_timer_manager.h"
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
 #include "content/child/child_process.h"
 #include "content/common/content_constants_internal.h"
 #include "content/gpu/gpu_child_thread.h"
 #include "content/gpu/gpu_process.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
 #include "content/public/common/result_codes.h"
@@ skipping 254 matching lines @@
   child_thread->Init(start_time);
 
   gpu_process.set_main_thread(child_thread);
 
 #if defined(OS_ANDROID)
   base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
       tracing::GraphicsMemoryDumpProvider::GetInstance(), "AndroidGraphics",
       nullptr);
 #endif
 
+  base::HighResolutionTimerManager hi_res_timer_manager;
+
   {
     TRACE_EVENT0("gpu", "Run Message Loop");
     base::RunLoop().Run();
   }
 
   return dead_on_arrival ? RESULT_CODE_GPU_DEAD_ON_ARRIVAL : 0;
 }
 
 namespace {
 
@@ skipping 35 matching lines @@
     return true;
   }
 
   return false;
 }
 #endif  // defined(OS_WIN)
 
 }  // namespace.
 
 }  // namespace content