Allow full-screen mode when not connected, and remember the previous setting.

remoting/webapp/crd/js/client_session.js

 // Copyright (c) 2012 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
  * Class handling creation and teardown of a remoting client session.
  *
  * The ClientSession class controls lifetime of the client plugin
  * object and provides the plugin with the functionality it needs to
@@ skipping 589 matching lines @@
 remoting.ClientSession.prototype.removePlugin = function() {
   if (this.plugin_) {
     this.plugin_.element().removeEventListener(
         'focus', this.callPluginGotFocus_, false);
     this.plugin_.element().removeEventListener(
         'blur', this.callPluginLostFocus_, false);
     this.plugin_.dispose();
     this.plugin_ = null;
   }
 
-  // Leave full-screen mode, and stop listening for related events.
-  var listener = this.callOnFullScreenChanged_;
-  remoting.fullscreen.activate(
-      false,
-      function() {
-        remoting.fullscreen.removeListener(listener);
-      });
+  // Stop listening for full-screen events.
+  remoting.fullscreen.removeListener(this.callOnFullScreenChanged_);
   this.updateClientSessionUi_(null);
 
   this.container_.removeEventListener('mousemove',
                                       this.updateMouseCursorPosition_,
                                       true);
 };
 
 /**
  * @param {remoting.ClientSession} clientSession The active session, or null if
  *     there is no connection.
@@ skipping 1094 matching lines @@
  * @param {Object} message The parsed extension message data.
  * @return {boolean} True if the message was recognized, false otherwise.
  */
 remoting.ClientSession.prototype.handleExtensionMessage =
     function(type, message) {
   if (this.videoFrameRecorder_) {
     return this.videoFrameRecorder_.handleMessage(type, message);
   }
   return false;
 }