Lazy initialization for PushMessagingEventRouter

chrome/browser/extensions/extension_service.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/extensions/extension_service.h"
 
 #include <algorithm>
 #include <iterator>
 #include <set>
 
@@ skipping 19 matching lines @@
 #include "chrome/browser/bookmarks/bookmark_extension_api.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_plugin_service_filter.h"
 #include "chrome/browser/debugger/devtools_window.h"
 #include "chrome/browser/extensions/api/app_runtime/app_runtime_api.h"
 #include "chrome/browser/extensions/api/declarative/rules_registry_service.h"
 #include "chrome/browser/extensions/api/extension_action/extension_actions_api.h"
 #include "chrome/browser/extensions/api/media_galleries_private/media_galleries_private_event_router.h"
 #include "chrome/browser/extensions/api/preference/preference_api.h"
-#include "chrome/browser/extensions/api/push_messaging/push_messaging_api.h"
 #include "chrome/browser/extensions/api/runtime/runtime_api.h"
 #include "chrome/browser/extensions/app_notification_manager.h"
 #include "chrome/browser/extensions/app_sync_data.h"
 #include "chrome/browser/extensions/browser_event_router.h"
 #include "chrome/browser/extensions/component_loader.h"
 #include "chrome/browser/extensions/crx_installer.h"
 #include "chrome/browser/extensions/data_deleter.h"
 #include "chrome/browser/extensions/extension_disabled_ui.h"
 #include "chrome/browser/extensions/extension_error_reporter.h"
 #include "chrome/browser/extensions/extension_error_ui.h"
@@ skipping 492 matching lines @@
     return;
 
 #if defined(ENABLE_EXTENSIONS)
   history_event_router_.reset(new HistoryExtensionEventRouter(profile_));
   browser_event_router_.reset(new extensions::BrowserEventRouter(profile_));
   window_event_router_.reset(new extensions::WindowEventRouter(profile_));
   preference_event_router_.reset(
       new extensions::PreferenceEventRouter(profile_));
   bookmark_event_router_.reset(new BookmarkExtensionEventRouter(
       BookmarkModelFactory::GetForProfile(profile_)));
-  push_messaging_event_router_.reset(
-      new extensions::PushMessagingEventRouter(profile_));
   media_galleries_private_event_router_.reset(
       new extensions::MediaGalleriesPrivateEventRouter(profile_));
 
 #if defined(OS_CHROMEOS)
   FileBrowserEventRouterFactory::GetForProfile(
       profile_)->ObserveFileSystemEvents();
 
   input_method_event_router_.reset(
       new chromeos::ExtensionInputMethodEventRouter);
 
   ExtensionMediaPlayerEventRouter::GetInstance()->Init(profile_);
   extensions::InputImeEventRouter::GetInstance()->Init();
 #endif  // defined(OS_CHROMEOS)
 #endif  // defined(ENABLE_EXTENSIONS)
   event_routers_initialized_ = true;
 }
 
-void ExtensionService::OnProfileSyncServiceShutdown() {
-  // TODO(akalin): Move this block to Shutdown() once
-  // http://crbug.com/153827 is fixed.
-  if (push_messaging_event_router_.get())
-    push_messaging_event_router_->Shutdown();
-}
-
 void ExtensionService::Shutdown() {
   // Do nothing for now.
 }
 
 const Extension* ExtensionService::GetExtensionById(
     const std::string& id, bool include_disabled) const {
   int include_mask = INCLUDE_ENABLED;
   if (include_disabled) {
     // Include blacklisted extensions here because there are hundreds of
     // callers of this function, and many might assume that this includes those
@@ skipping 2629 matching lines @@
     scoped_refptr<const Extension> extension = GetInstalledExtension(*it);
     DCHECK(extension);
     if (!extension)
       continue;
     blacklisted_extensions_.Insert(extension);
     UnloadExtension(*it, extension_misc::UNLOAD_REASON_BLACKLIST);
   }
 
   IdentifyAlertableExtensions();
 }