[NoStatePrefetch] Do not send responses to renderer in prefetch mode.

content/public/browser/resource_dispatcher_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_RESOURCE_DISPATCHER_HOST_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_RESOURCE_DISPATCHER_HOST_DELEGATE_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 86 matching lines @@
   // If the stream will be rendered in a BrowserPlugin, |payload| will contain
   // the data that should be given to the old ResourceHandler to forward to the
   // renderer process.
   virtual bool ShouldInterceptResourceAsStream(
       net::URLRequest* request,
       const base::FilePath& plugin_path,
       const std::string& mime_type,
       GURL* origin,
       std::string* payload);
 
+  // Returns if the response should never sent to the renderer. Note that the
+  // request is still allowed to complete.
+  virtual bool ShouldSinkResponse(net::URLRequest* request,
+                                  ResourceType resource_type);
+
   // Informs the delegate that a Stream was created. The Stream can be read from
   // the blob URL of the Stream, but can only be read once.
   virtual void OnStreamCreated(net::URLRequest* request,
                                std::unique_ptr<content::StreamInfo> stream);
 
   // Informs the delegate that a response has started.
   virtual void OnResponseStarted(net::URLRequest* request,
                                  ResourceContext* resource_context,
                                  ResourceResponse* response);
 
@@ skipping 25 matching lines @@
   virtual void OnAbortedFrameLoad(const GURL& url,
                                   base::TimeDelta request_loading_time);
 
  protected:
   virtual ~ResourceDispatcherHostDelegate();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RESOURCE_DISPATCHER_HOST_DELEGATE_H_