Fix null pointer error.

remoting/webapp/me2mom/client_screen.js

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview
  * Functions related to the 'client screen' for Chromoting.
  */
 
 'use strict';
@@ skipping 105 matching lines @@
 }
 
 /**
  * Update the remoting client layout in response to a resize event.
  *
  * @return {void} Nothing.
  */
 remoting.onResize = function() {
   if (remoting.clientSession)
     remoting.clientSession.onWindowSizeChanged();
-  remoting.toolbar.center();
+  if (remoting.toolbar)

[Sergey Ulanov, 2011/12/09 22:36:04]

Maybe change remoting.Toolbar to add onResize handler to toolbar-container so
that we can keep toolbar-specific logic in one file? I can imagine that in some
cases we may want toolbar to be located in a corner instead of screen edge (e.g.
for touch-based UI) - in such cases this code would have to be changed instead
of just swapping Toolbar implementations.

[Wez, 2011/12/09 22:46:53]

That sounds reasonable; we should also rename
ClientSession.onWindowSizeChanged() to onResize(), to match.  If you'd prefer to
do that in a follow-up CL, though, that's fine by me.

[Jamie, 2011/12/09 23:11:48]

Both good points. Done.

+    remoting.toolbar.center();
 }
 
 /**
  * Disconnect the remoting client.
  *
  * @return {void} Nothing.
  */
 remoting.disconnect = function() {
   if (remoting.clientSession) {
     remoting.clientSession.disconnect();
@@ skipping 302 matching lines @@
   var createPluginAndConnect = function(token) {
     remoting.clientSession.createPluginAndConnect(
         document.getElementById('session-mode'),
         token);
   };
 
   remoting.oauth2.callWithToken(createPluginAndConnect);
 }
 
 }());