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

content/public/browser/resource_dispatcher_host_delegate.h

Index: content/public/browser/resource_dispatcher_host_delegate.h
diff --git a/content/public/browser/resource_dispatcher_host_delegate.h b/content/public/browser/resource_dispatcher_host_delegate.h
index 219b00330e13a53d3c20105f2933d5495caafcb2..e3ba25bc4eda19c4039d1a60c912b44b6e2742ed 100644
--- a/content/public/browser/resource_dispatcher_host_delegate.h
+++ b/content/public/browser/resource_dispatcher_host_delegate.h
@@ -104,6 +104,11 @@ class CONTENT_EXPORT ResourceDispatcherHostDelegate {
       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,