Implement a ResourceThrottle for URL overriding in Chrome on Android.

content/public/browser/resource_throttle_controller.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_RESOURCE_THROTTLE_CONTROLLER_H_
 #define CONTENT_PUBLIC_BROWSER_RESOURCE_THROTTLE_CONTROLLER_H_
 
 namespace content {
 
 // Used by ResourceThrottle implementations to either resume a deferred
-// resource load or cancel a resource load at any time.
+// resource load, cancel a resource load or indicate that the resource load has
+// been handled externally at any time.
 class ResourceThrottleController {
  public:
   virtual void Cancel() = 0;
+  virtual void CancelWithHandledExternallyStatus() = 0;
   virtual void Resume() = 0;
  protected:
   virtual ~ResourceThrottleController() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RESOURCE_THROTTLE_CONTROLLER_H_