Cast: Add GetStats() extensions API.

chrome/test/data/extensions/api_test/cast_streaming/common.js

Index: chrome/test/data/extensions/api_test/cast_streaming/common.js
diff --git a/chrome/test/data/extensions/api_test/cast_streaming/common.js b/chrome/test/data/extensions/api_test/cast_streaming/common.js
index 36b6aec8287b2bb4ca13248486bc3366400b0bea..5c61bfae1edfcac53d1a1efeccf9b0ad15064fe7 100644
--- a/chrome/test/data/extensions/api_test/cast_streaming/common.js
+++ b/chrome/test/data/extensions/api_test/cast_streaming/common.js
@@ -13,6 +13,8 @@ function TestStateMachine(stream, audioId, videoId, udpId) {
   this.videoStopped = false;
   this.gotAudioRawEvents = false;
   this.gotVideoRawEvents = false;
+  this.gotAudioStats = false;
+  this.gotVideoStats = false;
 }
 
 TestStateMachine.prototype.onStarted = function(id) {
@@ -33,15 +35,23 @@ TestStateMachine.prototype.onStopped = function(id) {
     this.onAllStopped();
 }
 
-TestStateMachine.prototype.onGotRawEvents = function(id, rawEvents) {
-  chrome.test.assertTrue(rawEvents.length > 0);
+TestStateMachine.prototype.onGotLogs = function(id, isStats, data) {
+  chrome.test.assertTrue(data.length > 0);
   if (id == this.audioId) {
-    this.gotAudioRawEvents = true;
+    if (isStats)
+      this.gotAudioStats = true;
+    else
+      this.gotAudioRawEvents = true;
   }
   if (id == this.videoId) {
-    this.gotVideoRawEvents = true;
+    if (isStats)
+      this.gotVideoStats = true;
+    else
+      this.gotVideoRawEvents = true;
+  }
+  if (this.gotAudioRawEvents && this.gotVideoRawEvents &&
+      this.gotAudioStats && this.gotVideoStats) {
+    this.onGotAllLogs();
   }
-  if (this.gotAudioRawEvents && this.gotVideoRawEvents)
-    this.onGotAllRawEvents();
 }