Add UMA for High Resolution Timer Usage

components/nacl/loader/nacl_main.cc

 // Copyright 2013 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 <utility>
 
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/power_monitor/power_monitor.h"
 #include "base/power_monitor/power_monitor_device_source.h"
+#include "base/task_scheduler/task_scheduler.h"
 #include "base/timer/hi_res_timer_manager.h"
 #include "build/build_config.h"
 #include "components/nacl/loader/nacl_listener.h"
 #include "components/nacl/loader/nacl_main_platform_delegate.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
 #include "mojo/edk/embedder/embedder.h"
 
 // main() routine for the NaCl loader process.
 int NaClMain(const content::MainFunctionParams& parameters) {
   const base::CommandLine& parsed_command_line = parameters.command_line;
 
   // The Mojo EDK must be initialized before using IPC.
   mojo::edk::Init();
 
   // The main thread of the plugin services IO.
   base::MessageLoopForIO main_message_loop;
   base::PlatformThread::SetName("CrNaClMain");
 
+  base::TaskScheduler::CreateAndStartWithDefaultParams("NaCl");
+
   std::unique_ptr<base::PowerMonitorSource> power_monitor_source(
       new base::PowerMonitorDeviceSource());
   base::PowerMonitor power_monitor(std::move(power_monitor_source));
   base::HighResolutionTimerManager hi_res_timer_manager;
 
 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX) || \
     defined(OS_ANDROID)
   NaClMainPlatformDelegate platform;
   bool no_sandbox = parsed_command_line.HasSwitch(switches::kNoSandbox);
 
@@ skipping 10 matching lines @@
 #if defined(OS_POSIX)
   listener.set_number_of_cores(number_of_cores);
 #endif
 
   listener.Listen();
 #else
   NOTIMPLEMENTED() << " not implemented startup, plugin startup dialog etc.";
 #endif
   return 0;
 }