Moving notification types which are chrome specific to a new header file chrome_notification_type...

chrome/browser/tab_contents/thumbnail_generator.h

 // Copyright (c) 2011 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_TAB_CONTENTS_THUMBNAIL_GENERATOR_H_
 #define CHROME_BROWSER_TAB_CONTENTS_THUMBNAIL_GENERATOR_H_
 #pragma once
 
 #include <map>
 #include <utility>
@@ skipping 116 matching lines @@
   virtual void DidStartLoading();
   virtual void StopNavigation();
 
  private:
   virtual void WidgetDidReceivePaintAtSizeAck(
       RenderWidgetHost* widget,
       int tag,
       const gfx::Size& size);
 
   // NotificationObserver interface.
-  virtual void Observe(NotificationType type,
+  virtual void Observe(int type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   // Indicates that the given widget has changed is visibility.
   void WidgetHidden(RenderWidgetHost* widget);
 
   // Called when the given tab contents are disconnected (either
   // through being closed, or because the renderer is no longer there).
   void TabContentsDisconnected(TabContents* contents);
 
   NotificationRegistrar registrar_;
 
   // Map of callback objects by sequence number.
   struct AsyncRequestInfo;
   typedef std::map<int,
                    linked_ptr<AsyncRequestInfo> > ThumbnailCallbackMap;
   ThumbnailCallbackMap callback_map_;
 
   bool load_interrupted_;
 
   DISALLOW_COPY_AND_ASSIGN(ThumbnailGenerator);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_THUMBNAIL_GENERATOR_H_