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

content/child/resource_dispatcher.cc

Index: content/child/resource_dispatcher.cc
diff --git a/content/child/resource_dispatcher.cc b/content/child/resource_dispatcher.cc
index ba2e76be7369227031660b7d64e8c7b19dca6659..b54899a8ef242ddbfa400c6b4a1b4a51da04a97f 100644
--- a/content/child/resource_dispatcher.cc
+++ b/content/child/resource_dispatcher.cc
@@ -871,6 +871,7 @@ std::unique_ptr<ResourceRequest> ResourceDispatcher::CreateRequest(
   request->resource_body_stream_url = request_info.resource_body_stream_url;
   request->initiated_in_secure_context =
       extra_data->initiated_in_secure_context();
+  request->is_prefetch_only = extra_data->is_prefetch_only();
   if (frame_origin)
     *frame_origin = extra_data->frame_origin();
   return request;