Instrument some of the exit paths likely to suffer hangs.

chrome/browser/background/background_mode_manager.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 <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/base_paths.h"
 #include "base/bind.h"
@@ skipping 35 matching lines @@
 #include "content/public/browser/user_metrics.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/manifest_handlers/options_page_info.h"
 #include "extensions/common/permissions/permission_set.h"
 #include "grit/chrome_unscaled_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
+#if defined(OS_WIN)
+#include "components/browser_watcher/exit_funnel_win.h"
+#endif
+
 using base::UserMetricsAction;
 using extensions::Extension;
 using extensions::UpdatedExtensionPermissionsInfo;
 
 namespace {
 const int kInvalidExtensionIndex = -1;
 }
 
 BackgroundModeManager::BackgroundModeData::BackgroundModeData(
     Profile* profile,
@@ skipping 459 matching lines @@
     case IDC_TASK_MANAGER:
       if (bmd) {
         chrome::OpenTaskManager(bmd->GetBrowserWindow());
       } else {
         UserManager::Show(base::FilePath(),
                           profiles::USER_MANAGER_NO_TUTORIAL,
                           profiles::USER_MANAGER_SELECT_PROFILE_TASK_MANAGER);
       }
       break;
     case IDC_EXIT:
+#if defined(OS_WIN)
+      browser_watcher::ExitFunnel::RecordSingleEvent(
+            chrome::kBrowserExitCodesRegistryPath, L"TraybarExit");
+#endif
       content::RecordAction(UserMetricsAction("Exit"));
       chrome::CloseAllBrowsers();
       break;
     case IDC_STATUS_TRAY_KEEP_CHROME_RUNNING_IN_BACKGROUND: {
       // Background mode must already be enabled (as otherwise this menu would
       // not be visible).
       DCHECK(IsBackgroundModePrefEnabled());
       DCHECK(chrome::WillKeepAlive());
 
       // Set the background mode pref to "disabled" - the resulting notification
@@ skipping 86 matching lines @@
 void BackgroundModeManager::ResumeBackgroundMode() {
   background_mode_suspended_ = false;
   UpdateKeepAliveAndTrayIcon();
 }
 
 void BackgroundModeManager::UpdateKeepAliveAndTrayIcon() {
   if (in_background_mode_ && !background_mode_suspended_) {
     if (!keeping_alive_) {
       keeping_alive_ = true;
       chrome::IncrementKeepAliveCount();
+
+#if defined(OS_WIN)
+      browser_watcher::ExitFunnel::RecordSingleEvent(
+            chrome::kBrowserExitCodesRegistryPath, L"BackgroundOn");
+#endif
     }
     CreateStatusTrayIcon();
     return;
   }
 
   RemoveStatusTrayIcon();
   if (keeping_alive_) {
     keeping_alive_ = false;
     chrome::DecrementKeepAliveCount();
+
+#if defined(OS_WIN)
+    browser_watcher::ExitFunnel::RecordSingleEvent(
+          chrome::kBrowserExitCodesRegistryPath, L"BackgroundOff");
+#endif
   }
 }
 
 void BackgroundModeManager::OnBrowserAdded(Browser* browser) {
   ResumeBackgroundMode();
 }
 
 int BackgroundModeManager::GetBackgroundAppCount() const {
   int count = 0;
   // Walk the BackgroundModeData for all profiles and count the number of apps.
@@ skipping 180 matching lines @@
     }
   }
   return profile_it;
 }
 
 bool BackgroundModeManager::IsBackgroundModePrefEnabled() const {
   PrefService* service = g_browser_process->local_state();
   DCHECK(service);
   return service->GetBoolean(prefs::kBackgroundModeEnabled);
 }