Adding DRP specfic UMA for FirstContentfulPaint

content/child/weburlresponse_extradata_impl.h

Index: content/child/weburlresponse_extradata_impl.h
diff --git a/content/child/weburlresponse_extradata_impl.h b/content/child/weburlresponse_extradata_impl.h
index 1c7a2441a71ed47558d53e2845d7885239403d03..467cc6f94d2fef29235014c96fd85559e279e953 100644
--- a/content/child/weburlresponse_extradata_impl.h
+++ b/content/child/weburlresponse_extradata_impl.h
@@ -83,27 +83,33 @@ class CONTENT_EXPORT WebURLResponseExtraDataImpl :
   }
 
   bool is_ftp_directory_listing() const { return is_ftp_directory_listing_; }
   void set_is_ftp_directory_listing(bool is_ftp_directory_listing) {
     is_ftp_directory_listing_ = is_ftp_directory_listing;
   }
 
   bool is_using_lofi() const { return is_using_lofi_; }
   void set_is_using_lofi(bool is_using_lofi) { is_using_lofi_ = is_using_lofi; }
 
+  bool used_data_reduction_proxy() const { return used_data_reduction_proxy_; }
+  void set_used_data_reduction_proxy(bool used_data_reduction_proxy) {
+    used_data_reduction_proxy_ = used_data_reduction_proxy;
+  }
+
  private:
   std::string npn_negotiated_protocol_;
   bool is_ftp_directory_listing_;
   bool was_fetched_via_proxy_;
   net::HostPortPair proxy_server_;
   bool was_fetched_via_spdy_;
   bool was_npn_negotiated_;
   net::HttpResponseInfo::ConnectionInfo connection_info_;
   bool was_alternate_protocol_available_;
   bool is_using_lofi_;
+  bool used_data_reduction_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(WebURLResponseExtraDataImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_WEBURLRESPONSE_EXTRADATA_IMPL_H_