Remove NOTIFICATION_EXTENSION_ENABLED.

extensions/browser/event_router.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 "extensions/browser/event_router.h"
 
 #include <stddef.h>
 
 #include <utility>
 
 #include "base/atomic_sequence_num.h"
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/stl_util.h"
 #include "base/values.h"
-#include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_process_host.h"
 #include "extensions/browser/api_activity_monitor.h"
 #include "extensions/browser/event_router_factory.h"
 #include "extensions/browser/extension_host.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/extensions_browser_client.h"
 #include "extensions/browser/lazy_background_task_queue.h"
-#include "extensions/browser/notification_types.h"
 #include "extensions/browser/process_manager.h"
 #include "extensions/browser/process_map.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_api.h"
 #include "extensions/common/extension_messages.h"
 #include "extensions/common/extension_urls.h"
 #include "extensions/common/features/feature.h"
 #include "extensions/common/features/feature_provider.h"
 #include "extensions/common/manifest_handlers/background_info.h"
 #include "extensions/common/manifest_handlers/incognito_info.h"
 #include "extensions/common/permissions/permissions_data.h"
 
 using base::DictionaryValue;
 using base::ListValue;
 using content::BrowserContext;
 using content::BrowserThread;
 
 namespace extensions {
 
 namespace {
 
-void DoNothing(ExtensionHost* host) {}
-
 // A dictionary of event names to lists of filters that this extension has
 // registered from its lazy background page.
 const char kFilteredEvents[] = "filtered_events";
 
 // Sends a notification about an event to the API activity monitor and the
 // ExtensionHost for |extension_id| on the UI thread. Can be called from any
 // thread.
 void NotifyEventDispatched(void* browser_context_id,
                            const std::string& extension_id,
                            const std::string& event_name,
@@ skipping 72 matching lines @@
   DispatchExtensionMessage(ipc_sender, browser_context_id, extension_id,
                            event_id, event_name, event_args.get(), user_gesture,
                            info);
 }
 
 EventRouter::EventRouter(BrowserContext* browser_context,
                          ExtensionPrefs* extension_prefs)
     : browser_context_(browser_context),
       extension_prefs_(extension_prefs),
       extension_registry_observer_(this),
-      listeners_(this) {
-  registrar_.Add(this,
-                 extensions::NOTIFICATION_EXTENSION_ENABLED,
-                 content::Source<BrowserContext>(browser_context_));
+      listeners_(this),
+      lazy_event_dispatch_util_(browser_context_) {
   extension_registry_observer_.Add(ExtensionRegistry::Get(browser_context_));
 }
 
 EventRouter::~EventRouter() {
   for (auto* process : observed_process_set_)
     process->RemoveObserver(this);
 }
 
 void EventRouter::AddEventListener(const std::string& event_name,
                                    content::RenderProcessHost* process,
@@ skipping 581 matching lines @@
   ListValue* filter_list = nullptr;
   if (!filtered_events->GetListWithoutPathExpansion(event_name, &filter_list)) {
     filtered_events->SetWithoutPathExpansion(
         event_name, base::MakeUnique<base::ListValue>());
     filtered_events->GetListWithoutPathExpansion(event_name, &filter_list);
   }
 
   filter_list->Append(filter->CreateDeepCopy());
 }
 
-void EventRouter::Observe(int type,
-                          const content::NotificationSource& source,
-                          const content::NotificationDetails& details) {
-  DCHECK_EQ(extensions::NOTIFICATION_EXTENSION_ENABLED, type);
-  // If the extension has a lazy background page, make sure it gets loaded
-  // to register the events the extension is interested in.
-  const Extension* extension = content::Details<const Extension>(details).ptr();
-  if (BackgroundInfo::HasLazyBackgroundPage(extension)) {
-    LazyBackgroundTaskQueue* queue =
-        LazyBackgroundTaskQueue::Get(browser_context_);
-    queue->AddPendingTask(browser_context_, extension->id(),
-                          base::Bind(&DoNothing));
-  }
-}
-
 void EventRouter::OnExtensionLoaded(content::BrowserContext* browser_context,
                                     const Extension* extension) {
   // Add all registered lazy listeners to our cache.
   std::set<std::string> registered_events =
       GetRegisteredEvents(extension->id());
   listeners_.LoadUnfilteredLazyListeners(extension->id(), registered_events);
   const DictionaryValue* filtered_events = GetFilteredEvents(extension->id());
   if (filtered_events)
     listeners_.LoadFilteredLazyListeners(extension->id(), *filtered_events);
 }
@@ skipping 60 matching lines @@
                                      const std::string& extension_id,
                                      const GURL& listener_url,
                                      content::BrowserContext* browser_context)
     : event_name(event_name),
       extension_id(extension_id),
       listener_url(listener_url),
       browser_context(browser_context) {
 }
 
 }  // namespace extensions