Cast: Add GetStats() extensions API.

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

Index: chrome/test/data/extensions/api_test/cast_streaming/basics.js
diff --git a/chrome/test/data/extensions/api_test/cast_streaming/basics.js b/chrome/test/data/extensions/api_test/cast_streaming/basics.js
index f6cd491f1403dc5eb68627b95d1022075441423c..254b3891119483063af18ce6cff87c17c9662ef2 100644
--- a/chrome/test/data/extensions/api_test/cast_streaming/basics.js
+++ b/chrome/test/data/extensions/api_test/cast_streaming/basics.js
@@ -45,11 +45,15 @@ chrome.test.runTests([
         stateMachine.onAllStopped =
             pass(function(audioId, videoId) {
           rtpStream.getRawEvents(audioId,
-              stateMachine.onGotRawEvents.bind(stateMachine, audioId));
+              stateMachine.onGotLogs.bind(stateMachine, audioId, false));

[Alpha Left Google, 2014/03/03 07:11:39]

This test is already complicated. I'd refer getStats() to go into a separate
test.

[imcheng, 2014/03/04 02:06:24]

Done.

           rtpStream.getRawEvents(videoId,
-              stateMachine.onGotRawEvents.bind(stateMachine, videoId));
+              stateMachine.onGotLogs.bind(stateMachine, videoId, false));
+          rtpStream.getStats(audioId,
+              stateMachine.onGotLogs.bind(stateMachine, audioId, true));
+          rtpStream.getStats(videoId,
+              stateMachine.onGotLogs.bind(stateMachine, videoId, true));
         }.bind(null, audioId, videoId));
-        stateMachine.onGotAllRawEvents =
+        stateMachine.onGotAllLogs =
             pass(function(stream, audioId, videoId, udpId) {
           console.log("Disabling logging.");
           rtpStream.toggleLogging(audioId, false);