Adding DRP specfic UMA for FirstContentfulPaint

content/public/common/resource_response_info.h

 // Copyright 2014 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_COMMON_RESOURCE_RESPONSE_INFO_H_
 #define CONTENT_PUBLIC_COMMON_RESOURCE_RESPONSE_INFO_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 119 matching lines @@
   // TODO(ksakamoto): Move this to net::LoadTimingInfo.
   base::TimeTicks service_worker_start_time;
 
   // The time immediately before dispatching fetch event in ServiceWorker.
   // If the response is not provided by the ServiceWorker, kept empty.
   // TODO(ksakamoto): Move this to net::LoadTimingInfo.
   base::TimeTicks service_worker_ready_time;
 
   // Whether or not the request was for a LoFi version of the resource.
   bool is_using_lofi;
+
+  // True if the navigation was proxied through data reduction proxy.

[tbansal1, 2016/03/08 22:14:43]

s/navigation was proxied/resource was fetched/

[RyanSturm, 2016/03/10 00:37:58]

Done.

+  bool used_data_reduction_proxy;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_RESOURCE_RESPONSE_INFO_H_