Move most of the remaining users of WebContentsObserver::tab_contents() to use web_contents().

content/public/browser/notification_types.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 CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 #define CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 #pragma once
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
@@ skipping 91 matching lines @@
   // are provided.
   NOTIFICATION_LOAD_FROM_MEMORY_CACHE,
 
   // A provisional content load has failed with an error.  The source will be
   // a Source<NavigationController> corresponding to the tab in which the
   // load occurred.  Details in the form of a ProvisionalLoadDetails object
   // are provided.
   NOTIFICATION_FAIL_PROVISIONAL_LOAD_WITH_ERROR,
 
   // A response has been received for a resource request.  The source will be
-  // a Source<RenderViewHostDelegate> corresponding to the tab in which the
-  // request was issued.  Details in the form of a ResourceRequestDetails
-  // object are provided.
+  // a Source<WebContents> corresponding to the tab in which the request was
+  // issued.  Details in the form of a ResourceRequestDetails object are
+  // provided.
   NOTIFICATION_RESOURCE_RESPONSE_STARTED,
 
   // A redirect was received while requesting a resource.  The source will be
-  // a Source<RenderViewHostDelegate> corresponding to the tab in which the
-  // request was issued.  Details in the form of a ResourceRedirectDetails
-  // are provided.
+  // a Source<WebContents> corresponding to the tab in which the request was
+  // issued.  Details in the form of a ResourceRedirectDetails are provided.
   NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,
 
   // A new window was requested but was not created. The source will be a
   // Source<TabContents> corresponding to the tab the request originated from.
   // Details are the ViewHostMsg_CreateWindow_Params object that were used in
   // the request.
   NOTIFICATION_CREATING_NEW_WINDOW_CANCELLED,
 
   // SSL ---------------------------------------------------------------------
 
@@ skipping 293 matching lines @@
   // of a temporary zoom level change, the details is an empty string.
   NOTIFICATION_ZOOM_LEVEL_CHANGED,
 
   // Custom notifications used by the embedder should start from here.
   NOTIFICATION_CONTENT_END,
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_