Fix a crash in FullscreenExitBubbleController when the user clicks the "Exit full screen" button.

chrome/browser/ui/browser.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 856 matching lines @@
  private:
   FRIEND_TEST_ALL_PREFIXES(AppModeTest, EnableAppModeTest);
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, NoTabsInPopups);
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, ConvertTabToAppShortcut);
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, OpenAppWindowLikeNtp);
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, AppIdSwitch);
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, TestNewTabExitsFullscreen);
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, TestTabExitsItselfFromFullscreen);
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, TestFullscreenBubbleMouseLockState);
   FRIEND_TEST_ALL_PREFIXES(BrowserTest, TabEntersPresentationModeFromWindowed);
+  FRIEND_TEST_ALL_PREFIXES(FullscreenExitBubbleControllerTest,
+      DenyExitsFullscreen);
   FRIEND_TEST_ALL_PREFIXES(BrowserInitTest, OpenAppShortcutNoPref);
   FRIEND_TEST_ALL_PREFIXES(BrowserInitTest, OpenAppShortcutWindowPref);
   FRIEND_TEST_ALL_PREFIXES(BrowserInitTest, OpenAppShortcutTabPref);
   FRIEND_TEST_ALL_PREFIXES(BrowserInitTest, OpenAppShortcutPanel);
 
   // Used to describe why a tab is being detached. This is used by
   // TabDetachedAtImpl.
   enum DetachType {
     // Result of TabDetachedAt.
     DETACH_TYPE_DETACH,
@@ skipping 568 matching lines @@
 
   MouseLockState mouse_lock_state_;
 
   // True if the browser window has been shown at least once.
   bool window_has_shown_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_