Add Startup Timing to CPM

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
@@ skipping 1603 matching lines @@
         'browser/performance_monitor/event.cc',
         'browser/performance_monitor/event.h',
         'browser/performance_monitor/metric_details.cc',
         'browser/performance_monitor/metric_details.h',
         'browser/performance_monitor/metric_info.cc',
         'browser/performance_monitor/metric_info.h',
         'browser/performance_monitor/performance_monitor.cc',
         'browser/performance_monitor/performance_monitor.h',
         'browser/performance_monitor/performance_monitor_util.cc',
         'browser/performance_monitor/performance_monitor_util.h',
+        'browser/performance_monitor/startup_timer.cc',
+        'browser/performance_monitor/startup_timer.h',
         'browser/platform_util.h',
         'browser/platform_util_android.cc',
         'browser/platform_util_aura.cc',
         'browser/platform_util_chromeos.cc',
         'browser/platform_util_common_linux.cc',
         'browser/platform_util_linux.cc',
         'browser/platform_util_mac.mm',
         'browser/platform_util_win.cc',
         'browser/plugin_data_remover_helper.cc',
         'browser/plugin_data_remover_helper.h',
@@ skipping 3853 matching lines @@
           'variables': {
             'jni_gen_dir': 'chrome',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
       ],
      },
     ],
   ],
 }