Convert remaining WebContentsObservers loading callbacks to use RFH.

components/dom_distiller/content/web_contents_main_frame_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_DOM_DISTILLER_CONTENT_WEB_CONTENTS_MAIN_FRAME_OBSERVER_H_
 #define COMPONENTS_DOM_DISTILLER_CONTENT_WEB_CONTENTS_MAIN_FRAME_OBSERVER_H_
 
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
@@ skipping 10 matching lines @@
   virtual ~WebContentsMainFrameObserver();
 
   bool is_document_loaded_in_main_frame() {
     return is_document_loaded_in_main_frame_;
   }
 
   bool is_initialized() { return is_initialized_; }
 
   // content::WebContentsObserver implementation.
   virtual void DocumentLoadedInFrame(
-      int64 frame_id,
-      content::RenderViewHost* render_view_host) OVERRIDE;
+      content::RenderFrameHost* render_frame_host) OVERRIDE;
   virtual void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) OVERRIDE;
   virtual void RenderProcessGone(base::TerminationStatus status) OVERRIDE;
-  virtual void WebContentsDestroyed() OVERRIDE;
 
  private:
   explicit WebContentsMainFrameObserver(content::WebContents* web_contents);
   friend class content::WebContentsUserData<WebContentsMainFrameObserver>;
 
   // Removes the observer and clears the WebContents member.
   void CleanUp();
 
   // Whether DocumentLoadedInFrame has been called for the tracked WebContents
   // for the current main frame. This is cleared when the main frame navigates,
   // and set again when DocumentLoadedInFrame is called for the main frame.
   bool is_document_loaded_in_main_frame_;
 
   // Whether this object has been correctly initialized. This is set as soon as
   // at least one call to DidNavigateMainFrame has happened.
   bool is_initialized_;
 
-  // The WebContents this class is tracking.
-  content::WebContents* web_contents_;
-
   DISALLOW_COPY_AND_ASSIGN(WebContentsMainFrameObserver);
 };
 
 }  // namespace dom_distiller
 
 #endif  // COMPONENTS_DOM_DISTILLER_CONTENT_WEB_CONTENTS_MAIN_FRAME_OBSERVER_H_