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

remoting/client/chromoting_stats.cc

Index: remoting/client/chromoting_stats.cc
diff --git a/remoting/client/chromoting_stats.cc b/remoting/client/chromoting_stats.cc
index 71b7199ff5adca1f9222636bb5cc5fe79efedea8..01c67df81751d4b9beffd41388b32c3f4dcd41d7 100644
--- a/remoting/client/chromoting_stats.cc
+++ b/remoting/client/chromoting_stats.cc
@@ -6,24 +6,25 @@
 
 namespace {
 
-// The default window of bandwidth and frame rate in seconds.
-const int kTimeWindow = 3;
-
 // We take the last 10 latency numbers and report the average.
-const int kLatencyWindow = 10;
+const int kLatencySampleSize = 10;
 
 }  // namespace
 
 namespace remoting {
 
 ChromotingStats::ChromotingStats()
-    : video_bandwidth_(base::TimeDelta::FromSeconds(kTimeWindow)),
-      video_frame_rate_(base::TimeDelta::FromSeconds(kTimeWindow)),
-      video_capture_ms_(kLatencyWindow),
-      video_encode_ms_(kLatencyWindow),
-      video_decode_ms_(kLatencyWindow),
-      video_paint_ms_(kLatencyWindow),
-      round_trip_ms_(kLatencyWindow) {
+    : video_bandwidth_(
+          base::TimeDelta::FromSeconds(kStatsUpdateFrequencyInSeconds)),
+      video_frame_rate_(
+          base::TimeDelta::FromSeconds(kStatsUpdateFrequencyInSeconds)),
+      video_packet_rate_(
+          base::TimeDelta::FromSeconds(kStatsUpdateFrequencyInSeconds)),
+      video_capture_ms_(kLatencySampleSize),
+      video_encode_ms_(kLatencySampleSize),
+      video_decode_ms_(kLatencySampleSize),
+      video_paint_ms_(kLatencySampleSize),
+      round_trip_ms_(kLatencySampleSize) {
 }
 
 ChromotingStats::~ChromotingStats() {