Sync NaCl MediaStream Video example with ppapi/examples/media_stream_video

native_client_sdk/src/examples/api/media_stream_video/example.js

Index: native_client_sdk/src/examples/api/media_stream_video/example.js
diff --git a/native_client_sdk/src/examples/api/media_stream_video/example.js b/native_client_sdk/src/examples/api/media_stream_video/example.js
index dfd3eb9e4368f0dff6343528a511bb46f74a8d5a..89059d538a0662af18b7ecf5a086619d8a8be82e 100644
--- a/native_client_sdk/src/examples/api/media_stream_video/example.js
+++ b/native_client_sdk/src/examples/api/media_stream_video/example.js
@@ -6,7 +6,10 @@ var stream;
 
 function success(s) {
   stream = s;
-  common.naclModule.postMessage({track: stream.getVideoTracks()[0]});
+  common.naclModule.postMessage({
+    command: 'init',
+    track: stream.getVideoTracks()[0]
+  });
 }
 
 function failure(e) {
@@ -16,3 +19,12 @@ function failure(e) {
 function moduleDidLoad() {
   navigator.webkitGetUserMedia({'video': true}, success, failure);
 }
+
+function changeFormat(format) {
+  common.naclModule.postMessage({command:'format', format: format});
+}
+
+function changeSize(width, height) {
+  common.naclModule.postMessage({command:'size', width: width, height: height});
+}
+