Implement a ResourceThrottle for URL overriding in Chrome on Android.

content/public/browser/render_view_host_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_RENDER_VIEW_HOST_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_VIEW_HOST_DELEGATE_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 318 matching lines @@
       const content::GlobalRequestID& old_request_id) {}
 
   // The page wants to close the active view in this tab.
   virtual void RouteCloseEvent(RenderViewHost* rvh) {}
 
   // The page wants to post a message to the active view in this tab.
   virtual void RouteMessageEvent(
       RenderViewHost* rvh,
       const ViewMsg_PostMessage_Params& params) {}
 
+  // The page is asking whether to ignore the navigation.
+  virtual bool ShouldIgnoreNavigation(
+      RenderViewHost* rvh,
+      const GURL& url,
+      const content::Referrer& referrer,
+      bool is_content_initiated);
+
   // A javascript message, confirmation or prompt should be shown.
   virtual void RunJavaScriptMessage(RenderViewHost* rvh,
                                     const string16& message,
                                     const string16& default_prompt,
                                     const GURL& frame_url,
                                     ui::JavascriptMessageType type,
                                     IPC::Message* reply_msg,
                                     bool* did_suppress_message) {}
 
   virtual void RunBeforeUnloadConfirm(RenderViewHost* rvh,
@@ skipping 79 matching lines @@
   // Notification that the view has lost the mouse lock.
   virtual void LostMouseLock() {}
 
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_VIEW_HOST_DELEGATE_H_