Update Chromoting to use /third_party/closure_compiler.

remoting/webapp/crd/js/gnubby_auth_handler.js

Index: remoting/webapp/crd/js/gnubby_auth_handler.js
diff --git a/remoting/webapp/crd/js/gnubby_auth_handler.js b/remoting/webapp/crd/js/gnubby_auth_handler.js
index 52fd49574bf390ad6f3cd8b0f975cc3a5f3b0814..baba1a305aa59e13d0cb14f68081c0ea699d9eae 100644
--- a/remoting/webapp/crd/js/gnubby_auth_handler.js
+++ b/remoting/webapp/crd/js/gnubby_auth_handler.js
@@ -53,8 +53,8 @@ remoting.GnubbyAuthHandler.prototype.callback_ =
       'connectionId': connectionId,
       'data': getArrayAttr(response, 'data')
     });
-  } catch (err) {
-    console.error('gnubby callback failed: ', /** @type {*} */ (err));
+  } catch (/** @type {*} */ err) {
+    console.error('gnubby callback failed: ', err);
     this.clientSession_.sendGnubbyAuthMessage({
       'type': 'error',
       'connectionId': connectionId