Remove the use of ProvisionalChangeToMainFrameUrl from prerender code.

chrome/browser/prerender/prerender_tab_helper.h

 // Copyright (c) 2012 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_PRERENDER_PRERENDER_TAB_HELPER_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_TAB_HELPER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
@@ skipping 33 matching lines @@
     EVENT_MAX_VALUE
   };
 
   static void CreateForWebContentsWithPasswordManager(
       content::WebContents* web_contents,
       password_manager::PasswordManager* password_manager);
 
   virtual ~PrerenderTabHelper();
 
   // content::WebContentsObserver implementation.
-  virtual void ProvisionalChangeToMainFrameUrl(
-      const GURL& url,
-      content::RenderFrameHost* render_frame_host) OVERRIDE;
+  virtual void DidGetRedirectForResourceRequest(
+      content::RenderViewHost* render_view_host,
+      const content::ResourceRedirectDetails& details) OVERRIDE;
   virtual void DidStopLoading(
       content::RenderViewHost* render_view_host) OVERRIDE;
   virtual void DidStartProvisionalLoadForFrame(
       content::RenderFrameHost* render_frame_host,
       const GURL& validated_url,
       bool is_error_page,
       bool is_iframe_srcdoc) OVERRIDE;
   virtual void DidCommitProvisionalLoadForFrame(
       content::RenderFrameHost* render_frame_host,
       const GURL& validated_url,
       ui::PageTransition transition_type) OVERRIDE;
 
+  // Called when the URL of the main frame changed, either when the load
+  // commits, or a redirect happens.
+  void MainFrameUrlDidChange(const GURL& url);
+
   // Called when a password form has been submitted.
   void PasswordSubmitted(const autofill::PasswordForm& form);
 
   // Called when this prerendered WebContents has just been swapped in.
   void PrerenderSwappedIn();
 
   // Called when a control prerender is resolved. Applies to the next load.
   void WouldHavePrerenderedNextLoad(Origin origin);
 
  private:
@@ skipping 46 matching lines @@
   GURL url_;
 
   base::WeakPtrFactory<PrerenderTabHelper> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderTabHelper);
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_TAB_HELPER_H_