Expose RTT and downlink bandwidth using experimental Javascript API

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index a56d9d82832fa841a90a6b807321c4f31e886d1d..c2f4107341796834878ae6a73d421e161b32a50a 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -2125,8 +2125,8 @@ void RenderThreadImpl::OnNetworkQualityChanged(
     double transport_rtt_msec,
     double downlink_throughput_kbps) {
   UMA_HISTOGRAM_BOOLEAN("NQE.RenderThreadNotified", true);
-  // TODO(tbansal): https://crbug.com/719108. Notify WebNetworkStateNotifier of
-  // the change in the network quality.
+  WebNetworkStateNotifier::SetNetworkQuality(http_rtt_msec, transport_rtt_msec,
+                                             downlink_throughput_kbps);
 }
 
 void RenderThreadImpl::SetWebKitSharedTimersSuspended(bool suspend) {