Remove page id from ViewHostMsg_UpdateTargetURL; no one actually uses it on the browser side.

content/public/browser/web_contents_delegate.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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 
 #include <set>
 #include <string>
 
@@ skipping 126 matching lines @@
   // Request the delegate to move this WebContents to the specified position
   // in screen coordinates.
   virtual void MoveContents(WebContents* source, const gfx::Rect& pos) {}
 
   // Called to determine if the WebContents is contained in a popup window
   // or a panel window.
   virtual bool IsPopupOrPanel(const WebContents* source) const;
 
   // Notification that the target URL has changed.
   virtual void UpdateTargetURL(WebContents* source,
-                               int32 page_id,
                                const GURL& url) {}
 
   // Notification that there was a mouse event, along with the absolute
   // coordinates of the mouse pointer and whether it was a normal motion event
   // (otherwise, the pointer left the contents area).
   virtual void ContentsMouseEvent(WebContents* source,
                                   const gfx::Point& location,
                                   bool motion) {}
 
   // Request the delegate to change the zoom level of the current tab.
@@ skipping 342 matching lines @@
   // Called when |this| is no longer the WebContentsDelegate for |source|.
   void Detach(WebContents* source);
 
   // The WebContents that this is currently a delegate for.
   std::set<WebContents*> attached_contents_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_