Update Chromoting to use /third_party/closure_compiler.

remoting/webapp/crd/js/it2me_helper_channel.js

Index: remoting/webapp/crd/js/it2me_helper_channel.js
diff --git a/remoting/webapp/crd/js/it2me_helper_channel.js b/remoting/webapp/crd/js/it2me_helper_channel.js
index 84608be60b576a47744dfaeb15e05b15a719a643..a05ad60328ae26ca12cff53ec86f6a18fcfafe1c 100644
--- a/remoting/webapp/crd/js/it2me_helper_channel.js
+++ b/remoting/webapp/crd/js/it2me_helper_channel.js
@@ -166,8 +166,8 @@ remoting.It2MeHelperChannel.prototype.onHangoutMessage_ = function(message) {
         return true;
     }
     throw new Error('Unknown message method=' + message.method);
-  } catch(e) {
-    var error = /** @type {Error} */ e;
+  } catch(/** @type {*} */ e) {
+    var error = /** @type {Error} */ (e);
     this.sendErrorResponse_(this.hangoutPort_, error, message);
   }
   return false;
@@ -204,18 +204,19 @@ remoting.It2MeHelperChannel.prototype.launchWebapp_ =
     throw new Error('Access code is missing');
   }
 
+  /**
+   * @this {remoting.It2MeHelperChannel}
+   * @param {string} instanceId
+   */
+  var setInstance = function(instanceId) {
+    this.instanceId_ = instanceId;
+  };
+
   // Launch the webapp.
   this.appLauncher_.launch({
     mode: 'hangout',
     accessCode: accessCode
-  }).then(
-    /**
-     * @this {remoting.It2MeHelperChannel}
-     * @param {string} instanceId
-     */
-    function(instanceId){
-      this.instanceId_ = instanceId;
-    }.bind(this));
+  }).then(setInstance.bind(this));
 };
 
 /**
@@ -270,13 +271,13 @@ remoting.It2MeHelperChannel.prototype.onWebappMessage_ = function(message) {
       case MessageTypes.SESSION_STATE_CHANGED:
         var state = getNumberAttr(message, 'state');
         this.sessionState_ =
-            /** @type {remoting.ClientSession.State} */ state;
+            /** @type {remoting.ClientSession.State} */(state);
         this.hangoutPort_.postMessage(message);
         return true;
     }
     throw new Error('Unknown message method=' + message.method);
-  } catch(e) {
-    var error = /** @type {Error} */ e;
+  } catch(/** @type {*} */ e) {
+    var error = /** @type {Error} */ (e);
     this.sendErrorResponse_(this.webappPort_, error, message);
   }
   return false;