Cast: Add JS API to get raw events logs from cast extension.

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 d6d0bf45aea6b08e8c7e9c2de1d4c93711464b15..003f0e0f5a908a6aeb8ea61d6e56e4c52d805c28 100644
--- a/chrome/test/data/extensions/api_test/cast_streaming/basics.js
+++ b/chrome/test/data/extensions/api_test/cast_streaming/basics.js
@@ -17,6 +17,8 @@ function TestStateMachine(stream, audioId, videoId, udpId) {
   this.videoStarted = false;
   this.audioStopped = false;
   this.videoStopped = false;
+  this.gotAudioRawEvents = false;
+  this.gotVideoRawEvents = false;
 }
 
 TestStateMachine.prototype.onStarted = function(id) {
@@ -37,6 +39,17 @@ TestStateMachine.prototype.onStopped = function(id) {
     this.onAllStopped();
 }
 
+TestStateMachine.prototype.onGotRawEvents = function(id, rawEvents) {
+  if (id == this.audioId) {
+    this.gotAudioRawEvents = true;
+  }
+  if (id == this.videoId) {
+    this.gotVideoRawEvents = true;
+  }
+  if (this.gotAudioRawEvents && this.gotVideoRawEvents)
+    this.onGotAllRawEvents();
+}
+
 chrome.test.runTests([
   function rtpStreamStart() {
     console.log("[TEST] rtpStreamStart");
@@ -62,6 +75,9 @@ chrome.test.runTests([
             stateMachine.onStarted.bind(stateMachine));
         stateMachine.onAllStarted =
             pass(function(audioId, videoId) {
+          console.log("Starting logging.");
+          rtpStream.startLogging(audioId);
+          rtpStream.startLogging(videoId);
           console.log("Stopping.");
           rtpStream.stop(audioId);
           rtpStream.stop(videoId);
@@ -69,6 +85,13 @@ chrome.test.runTests([
         rtpStream.onStopped.addListener(
             stateMachine.onStopped.bind(stateMachine));
         stateMachine.onAllStopped =
+            pass(function(audioId, videoId) {
+          rtpStream.getRawEvents(audioId,
+              stateMachine.onGotRawEvents.bind(stateMachine, audioId));
+          rtpStream.getRawEvents(videoId,
+              stateMachine.onGotRawEvents.bind(stateMachine, videoId));
+        }.bind(null, audioId, videoId));
+        stateMachine.onGotAllRawEvents =
             pass(function(stream, audioId, videoId, udpId) {
           console.log("Destroying.");
           rtpStream.destroy(audioId);