Revert of Leave fullscreen mode in an app window when ESC key is pressed.

chrome/test/data/extensions/platform_apps/leave_fullscreen/main.js

-// Copyright 2013 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.
-
-chrome.app.runtime.onLaunched.addListener(function() {
-  chrome.app.window.create('main.html', {}, function(win) {
-    // The following key events handler should have no effect because the
-    // application does not have the 'overrideEscFullscreen' permission.
-    win.contentWindow.document.addEventListener('keydown', function(e) {
-      e.preventDefault();
-    });
-    win.contentWindow.document.addEventListener('keyup', function(e) {
-      e.preventDefault();
-    });
-
-    chrome.test.sendMessage('Launched', function(reply) {
-      switch (reply) {
-        case 'window':
-          win.fullscreen();
-          break;
-        case 'dom':
-          win.contentWindow.document.addEventListener('keydown', function() {
-            win.contentWindow.document.removeEventListener('keydown',
-                                                           arguments.callee);
-            win.contentWindow.document.body.webkitRequestFullscreen();
-          });
-          break;
-      }
-    });
-  });
-});