[Webapp Refactor] Remove remoting.clientSession.

remoting/webapp/app_remoting/js/app_remoting.js

Index: remoting/webapp/app_remoting/js/app_remoting.js
diff --git a/remoting/webapp/app_remoting/js/app_remoting.js b/remoting/webapp/app_remoting/js/app_remoting.js
index e1749d820077daf75a946fcaf24c8aeb9dca8a6f..5043e045b6f6310ff4da61dc0b22db0eb5c32c21 100644
--- a/remoting/webapp/app_remoting/js/app_remoting.js
+++ b/remoting/webapp/app_remoting/js/app_remoting.js
@@ -93,6 +93,10 @@ remoting.AppRemoting.prototype.getApplicationName = function() {
   return manifest.name;
 };
 
+remoting.AppRemoting.prototype.getActivity = function() {

[kelvinp, 2015/04/14 23:16:32]

This will be fixed to expose the correct activity in CL
https://codereview.chromium.org/1082973002/

+  return null;
+};
+
 /**
  * @param {!remoting.Error} error The failure reason.
  * @override {remoting.ApplicationInterface}
@@ -155,10 +159,6 @@ remoting.AppRemoting.prototype.startApplication_ = function(token) {
 
         remoting.setMode(remoting.AppMode.CLIENT_CONNECTING);
 
-        var idleDetector = new remoting.IdleDetector(
-            document.getElementById('idle-dialog'),
-            remoting.app.disconnect.bind(remoting.app));
-
         /**
          * @param {string} tokenUrl Token-issue URL received from the host.
          * @param {string} hostPublicKey Host public key (DER and Base64
@@ -212,6 +212,11 @@ remoting.AppRemoting.prototype.onConnected = function(connectionInfo) {
 
   connectionInfo.plugin().extensions().register(this);
 
+  var session = connectionInfo.session();
+  var idleDetector = new remoting.IdleDetector(

[kelvinp, 2015/04/14 23:16:32]

The IdleDetector should be started only when the session is connected.

+      document.getElementById('idle-dialog'),
+      session.disconnect.bind(session, remoting.Error.none()));
+
   this.connectedView_ = new remoting.AppConnectedView(
       document.getElementById('client-container'), connectionInfo);