Remove NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED from c/b/e/api

chrome/browser/extensions/api/downloads/downloads_api.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_DOWNLOADS_DOWNLOADS_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_DOWNLOADS_DOWNLOADS_API_H_
 
 #include <set>
 #include <string>
 
 #include "base/files/file_path.h"
-#include "base/memory/singleton.h"
-#include "base/strings/string16.h"
-#include "base/values.h"
+#include "base/scoped_observer.h"
 #include "chrome/browser/download/all_download_item_notifier.h"
 #include "chrome/browser/download/download_danger_prompt.h"
 #include "chrome/browser/download/download_path_reservation_tracker.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "chrome/browser/extensions/extension_warning_set.h"
 #include "chrome/common/extensions/api/downloads.h"
-#include "content/public/browser/download_item.h"
 #include "content/public/browser/download_manager.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
 #include "extensions/browser/event_router.h"
+#include "extensions/browser/extension_registry_observer.h"
 
 class DownloadFileIconExtractor;
 class DownloadQuery;
 
 namespace content {
 class ResourceContext;
 class ResourceDispatcherHost;
 }
 
+namespace extensions {
+class ExtensionRegistry;
+}
+
 // Functions in the chrome.downloads namespace facilitate
 // controlling downloads from extensions. See the full API doc at
 // http://goo.gl/6hO1n
 
 namespace download_extension_errors {
 
 // Errors that can be returned through chrome.runtime.lastError.message.
 extern const char kEmptyFile[];
 extern const char kFileAlreadyDeleted[];
 extern const char kFileNotRemoved[];
@@ skipping 244 matching lines @@
 
  private:
   void OnIconURLExtracted(const std::string& url);
   base::FilePath path_;
   scoped_ptr<DownloadFileIconExtractor> icon_extractor_;
   DISALLOW_COPY_AND_ASSIGN(DownloadsGetFileIconFunction);
 };
 
 // Observes a single DownloadManager and many DownloadItems and dispatches
 // onCreated and onErased events.
-class ExtensionDownloadsEventRouter : public extensions::EventRouter::Observer,
-                                      public content::NotificationObserver,
-                                      public AllDownloadItemNotifier::Observer {
+class ExtensionDownloadsEventRouter
+    : public extensions::EventRouter::Observer,
+      public extensions::ExtensionRegistryObserver,
+      public AllDownloadItemNotifier::Observer {
  public:
   typedef base::Callback<void(
       const base::FilePath& changed_filename,
       DownloadPathReservationTracker::FilenameConflictAction)>
     FilenameChangedCallback;
 
   // The logic for how to handle conflicting filename suggestions from multiple
   // extensions is split out here for testing.
   static void DetermineFilenameInternal(
       const base::FilePath& filename,
@@ skipping 36 matching lines @@
   // called and the filename determination process will continue as normal. If
   // an extension wants to change the target filename, then |change| will be
   // called with the new filename and a flag indicating whether the new file
   // should overwrite any old files of the same name.
   void OnDeterminingFilename(
       content::DownloadItem* item,
       const base::FilePath& suggested_path,
       const base::Closure& no_change,
       const FilenameChangedCallback& change);
 
-  // AllDownloadItemNotifier::Observer
+  // AllDownloadItemNotifier::Observer.
   virtual void OnDownloadCreated(
       content::DownloadManager* manager,
       content::DownloadItem* download_item) OVERRIDE;
   virtual void OnDownloadUpdated(
       content::DownloadManager* manager,
       content::DownloadItem* download_item) OVERRIDE;
   virtual void OnDownloadRemoved(
       content::DownloadManager* manager,
       content::DownloadItem* download_item) OVERRIDE;
 
-  // extensions::EventRouter::Observer
+  // extensions::EventRouter::Observer.
   virtual void OnListenerRemoved(
       const extensions::EventListenerInfo& details) OVERRIDE;
 
   // Used for testing.
   struct DownloadsNotificationSource {
     std::string event_name;
     Profile* profile;
   };
 
  private:
   void DispatchEvent(
       const std::string& event_name,
       bool include_incognito,
       const extensions::Event::WillDispatchCallback& will_dispatch_callback,
       base::Value* json_arg);
 
-  // content::NotificationObserver
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
+  // extensions::ExtensionRegistryObserver.
+  virtual void OnExtensionUnloaded(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension,
+      extensions::UnloadedExtensionInfo::Reason reason) OVERRIDE;
 
   Profile* profile_;
   AllDownloadItemNotifier notifier_;
   std::set<const extensions::Extension*> shelf_disabling_extensions_;
-  content::NotificationRegistrar registrar_;
+
+  // Listen to extension unloaded notifications.
+  ScopedObserver<extensions::ExtensionRegistry,
+                 extensions::ExtensionRegistryObserver>
+      extension_registry_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionDownloadsEventRouter);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DOWNLOADS_DOWNLOADS_API_H_