[Webapp Refactor] Reparent the ConnectedView into the delegate.

remoting/webapp/crd/js/desktop_remoting.js

Index: remoting/webapp/crd/js/desktop_remoting.js
diff --git a/remoting/webapp/crd/js/desktop_remoting.js b/remoting/webapp/crd/js/desktop_remoting.js
index 8ad5e841c7ee7f837088780bb1d8e5e8f468139a..28bfa15fa76fcc14b1c64e26ad1869460e6b2bb4 100644
--- a/remoting/webapp/crd/js/desktop_remoting.js
+++ b/remoting/webapp/crd/js/desktop_remoting.js
@@ -297,16 +297,6 @@ remoting.DesktopRemoting.prototype.handleVideoStreamingStarted = function() {
 };
 
 /**
- * @param {string} type The type of the extension message.
- * @param {Object} message The parsed extension message data.
- * @return {boolean} Return true if the extension message was recognized.
- */
-remoting.DesktopRemoting.prototype.handleExtensionMessage = function(
-    type, message) {
-  return false;
-};
-
-/**
  * Called when an error needs to be displayed to the user.
  *
  * @param {!remoting.Error} error The error to be localized and displayed.