Cleanup/ Remove deprecated extension notification from ExtensionHost

extensions/browser/extension_host.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_EXTENSION_HOST_H_
 #define EXTENSIONS_BROWSER_EXTENSION_HOST_H_
 
 #include <set>
 #include <string>
-#include <vector>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/timer/elapsed_timer.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "extensions/browser/deferred_start_render_host.h"
 #include "extensions/browser/extension_function_dispatcher.h"
+#include "extensions/browser/extension_registry_observer.h"
 #include "extensions/common/stack_frame.h"
 #include "extensions/common/view_type.h"
 
 class PrefsTabHelper;
 
 namespace content {
 class BrowserContext;
 class RenderProcessHost;
 class RenderWidgetHostView;
 class SiteInstance;
@@ skipping 10 matching lines @@
 // It handles setting up the renderer process, if needed, with special
 // privileges available to extensions.  It may have a view to be shown in the
 // browser UI, or it may be hidden.
 //
 // If you are adding code that only affects visible extension views (and not
 // invisible background pages) you should add it to ExtensionViewHost.
 class ExtensionHost : public DeferredStartRenderHost,
                       public content::WebContentsDelegate,
                       public content::WebContentsObserver,
                       public ExtensionFunctionDispatcher::Delegate,
-                      public content::NotificationObserver {
+                      public ExtensionRegistryObserver {
  public:
   ExtensionHost(const Extension* extension,
                 content::SiteInstance* site_instance,
                 const GURL& url, ViewType host_type);
   ~ExtensionHost() override;
 
   const Extension* extension() const { return extension_; }
   const std::string& extension_id() const { return extension_id_; }
   content::WebContents* host_contents() const { return host_contents_.get(); }
   content::RenderViewHost* render_view_host() const;
@@ skipping 57 matching lines @@
   void CloseContents(content::WebContents* contents) override;
   void RequestMediaAccessPermission(
       content::WebContents* web_contents,
       const content::MediaStreamRequest& request,
       const content::MediaResponseCallback& callback) override;
   bool CheckMediaAccessPermission(content::WebContents* web_contents,
                                   const GURL& security_origin,
                                   content::MediaStreamType type) override;
   bool IsNeverVisible(content::WebContents* web_contents) override;
 
-  // content::NotificationObserver:
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
+  // ExtensionRegistryObserver:
+  void OnExtensionUnloaded(content::BrowserContext* browser_context,
+                           const Extension* extension,
+                           UnloadedExtensionInfo::Reason reason) override;
 
  protected:
-  content::NotificationRegistrar* registrar() { return &registrar_; }
-
   // Called after the extension page finishes loading but before the
   // EXTENSION_HOST_DID_STOP_LOADING notification is sent.
   virtual void OnDidStopLoading();
 
   // Navigates to the initial page.
   virtual void LoadInitialURL();
 
   // Returns true if we're hosting a background page.
   virtual bool IsBackgroundPage() const;
 
@@ skipping 36 matching lines @@
 
   // True if the main frame has finished parsing.
   bool document_element_available_;
 
   // The original URL of the page being hosted.
   GURL initial_url_;
 
   // Messages sent out to the renderer that have not been acknowledged yet.
   std::set<int> unacked_messages_;
 
-  content::NotificationRegistrar registrar_;
-
   ExtensionFunctionDispatcher extension_function_dispatcher_;
 
   // The type of view being hosted.
   ViewType extension_host_type_;
 
   // Measures how long since the initial URL started loading.
   scoped_ptr<base::ElapsedTimer> load_start_;
 
   ObserverList<ExtensionHostObserver> observer_list_;
   ObserverList<DeferredStartRenderHostObserver>
       deferred_start_render_host_observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionHost);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_HOST_H_