Remove NOTIFICATION_FAVICON_UPDATED

components/favicon/core/favicon_driver_observer.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 COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_OBSERVER_H_
 #define COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_OBSERVER_H_
 
 #include "base/macros.h"
 
 namespace gfx {
 class Image;
 }
 
 namespace favicon {
 
+class FaviconDriver;
+
 // An observer implemented by classes which are interested in event from
 // FaviconDriver.
 class FaviconDriverObserver {
  public:
   FaviconDriverObserver() {}
   virtual ~FaviconDriverObserver() {}
 
   // Called when favicon |image| is retrieved from either web site or cached
   // storage.
   virtual void OnFaviconAvailable(const gfx::Image& image) = 0;
 
+  // Called when favicon has changed for the current page. |icon_url_changed| is
+  // true if the favicon URL has also changed.
+  virtual void OnFaviconUpdated(FaviconDriver* favicon_driver,
+                                bool icon_url_changed) = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(FaviconDriverObserver);
 };
 
 }  // namespace favicon
 
 #endif  // COMPONENTS_FAVICON_CORE_FAVICON_DRIVER_OBSERVER_H_