Report video and network stats averaged over 1s, and create corresponding UMA metrics.

remoting/client/software_video_renderer.cc

Index: remoting/client/software_video_renderer.cc
diff --git a/remoting/client/software_video_renderer.cc b/remoting/client/software_video_renderer.cc
index 51782e05f476f4942a30408a7e52d0214cc0a80f..780cf82bed356a9f24e9e76c574d4037a3206103 100644
--- a/remoting/client/software_video_renderer.cc
+++ b/remoting/client/software_video_renderer.cc
@@ -352,16 +352,19 @@ void SoftwareVideoRenderer::ProcessVideoPacket(scoped_ptr<VideoPacket> packet,
 
   // If the video packet is empty then drop it. Empty packets are used to
   // maintain activity on the network.
+  stats_.video_fps_with_empty_frames()->Record(1);
   if (!packet->has_data() || packet->data().size() == 0) {
     done.Run();
     return;
   }
 
-  // Add one frame to the counter.
+  // Add one frame to the video frame rate counters.
   stats_.video_frame_rate()->Record(1);
+  stats_.video_fps()->Record(1);
 
   // Record other statistics received from host.
   stats_.video_bandwidth()->Record(packet->data().size());
+  stats_.video_bytes_per_s()->Record(packet->data().size());
   if (packet->has_capture_time_ms())
     stats_.video_capture_ms()->Record(packet->capture_time_ms());
   if (packet->has_encode_time_ms())