Adding DRP specfic UMA for FirstContentfulPaint

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index ec975b5e8bd90cff456118229e8b216f512d2e6c..1bf8cd7177d445e844b23a5819c58d1d8bdf3a86 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -4445,22 +4445,25 @@ void RenderFrameImpl::SendDidCommitProvisionalLoad(
   // dependencies (crbug.com/392171 DownloadRequestHandle, SaveFileManager,
   // ResourceDispatcherHostImpl, MediaStreamUIProxy,
   // SpeechRecognitionDispatcherHost and possibly others). They look up the view
   // based on the ID stored in the resource requests. Once those dependencies
   // are unwound or moved to RenderFrameHost (crbug.com/304341) we can move the
   // client to be based on the routing_id of the RenderFrameHost.
   params.render_view_routing_id = render_view_->routing_id();
   params.socket_address.set_host(response.remoteIPAddress().utf8());
   params.socket_address.set_port(response.remotePort());
   WebURLResponseExtraDataImpl* extra_data = GetExtraDataFromResponse(response);
-  if (extra_data)
+  if (extra_data) {
     params.was_fetched_via_proxy = extra_data->was_fetched_via_proxy();
+    params.used_data_reduction_proxy = extra_data->used_data_reduction_proxy();
+    params.is_using_lofi = extra_data->is_using_lofi();
+  }
   params.was_within_same_page = navigation_state->WasWithinSamePage();
   params.security_info = response.securityInfo();
 
   // Set the origin of the frame.  This will be replicated to the corresponding
   // RenderFrameProxies in other processes.
   // TODO(alexmos): Origins for URLs with non-standard schemes are excluded due
   // to https://crbug.com/439608 and will be replicated as unique origins.
   if (!is_swapped_out_) {
     std::string scheme = frame->document().securityOrigin().protocol().utf8();
     if (url::IsStandard(scheme.c_str(),