silvermine#60: Add handle chromecast also from native

Untill now, we only listed for changes in connected
state if menu was launched by user.

src/js/chromecast/ChromecastSessionManager.js

@@ -89,6 +89,10 @@ ChromecastSessionManager = Class.extend(/** @lends ChromecastSessionManager.prot
       if (event.sessionState === cast.framework.SessionState.SESSION_ENDED) {
          this.player.trigger('chromecastDisconnected');
          this._reloadTech();
+      } else if (event.sessionState === cast.framework.SessionState.SESSION_STARTED) {
+         hasConnected = true;
+         this.player.trigger('chromecastConnected');
+         this._reloadTech();
       }
    },
 
@@ -135,27 +139,22 @@ ChromecastSessionManager = Class.extend(/** @lends ChromecastSessionManager.prot
     * Video.js player does not have a source.
     */
    openCastMenu: function() {
-      var onSessionSuccess;
-
       if (!this.player.currentSource()) {
          // Do not cast if there is no media item loaded in the player
          return;
       }
-      onSessionSuccess = function() {
-         hasConnected = true;
-         this.player.trigger('chromecastConnected');
-         this._reloadTech();
-      }.bind(this);
 
       // It is the `requestSession` function call that actually causes the cast menu to
       // open.
+      // The first parameter is the success handler. Success is now handled in
+      // _onSessionStateChange, so here is a noop.
       // The second parameter to `.then` is an error handler. We use _.noop here
       // because we handle errors in the ChromecastTech class and we do not want an
       // error to bubble up to the console. This error handler is also triggered when
       // the user closes out of the chromecast selector pop-up without choosing a
       // casting destination.
       this.getCastContext().requestSession()
-         .then(onSessionSuccess, _.noop);
+         .then(_.noop, _.noop);
    },
 
    /**