Adds UMA metrics for renderer uptime

chrome/browser/chrome_browser_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 "chrome/browser/chrome_browser_main.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
@@ skipping 50 matching lines @@
 #include "chrome/browser/component_updater/widevine_cdm_component_installer.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/first_run/first_run.h"
 #include "chrome/browser/geolocation/chrome_access_token_store.h"
 #include "chrome/browser/gpu/gpu_profile_cache.h"
 #include "chrome/browser/gpu/three_d_api_observer.h"
 #include "chrome/browser/media/webrtc/media_capture_devices_dispatcher.h"
 #include "chrome/browser/memory/tab_manager.h"
 #include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
 #include "chrome/browser/metrics/field_trial_synchronizer.h"
+#include "chrome/browser/metrics/renderer_uptime_tracker.h"
 #include "chrome/browser/metrics/thread_watcher.h"
 #include "chrome/browser/nacl_host/nacl_browser_delegate_impl.h"
 #include "chrome/browser/net/crl_set_fetcher.h"
 #include "chrome/browser/performance_monitor/performance_monitor.h"
 #include "chrome/browser/plugins/plugin_prefs.h"
 #include "chrome/browser/prefs/chrome_command_line_pref_store.h"
 #include "chrome/browser/prefs/chrome_pref_service_factory.h"
 #include "chrome/browser/prefs/incognito_mode_prefs.h"
 #include "chrome/browser/prefs/pref_metrics_service.h"
 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
@@ skipping 680 matching lines @@
   // Initialize FieldTrialSynchronizer system. This is a singleton and is used
   // for posting tasks via base::Bind. Its deleted when it goes out of scope.
   // Even though base::Bind does AddRef and Release, the object will not be
   // deleted after the Task is executed.
   field_trial_synchronizer_ = new FieldTrialSynchronizer();
 
 #if defined(OS_WIN) || defined(OS_MACOSX) || \
     (defined(OS_LINUX) && !defined(OS_CHROMEOS))
   metrics::DesktopSessionDurationTracker::Initialize();
 #endif
+  metrics::RendererUptimeTracker::Initialize();
 
 #if defined(OS_WIN)
   // Cleanup the PreRead field trial registry key.
   // TODO(fdoray): Remove this when M56 hits stable.
   const base::string16 pre_read_field_trial_registry_path =
       BrowserDistribution::GetDistribution()->GetRegistryPath() +
       L"\\PreReadFieldTrial";
   base::win::RegKey(HKEY_CURRENT_USER,
                     pre_read_field_trial_registry_path.c_str(), KEY_SET_VALUE)
       .DeleteKey(L"");
@@ skipping 1331 matching lines @@
   chromeos::CrosSettings::Shutdown();
 #endif  // defined(OS_CHROMEOS)
 #endif  // defined(OS_ANDROID)
 }
 
 // Public members:
 
 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   chrome_extra_parts_.push_back(parts);
 }