Don't animate the download shelf when entering/exiting fullscreen.

chrome/browser/ui/exclusive_access/fullscreen_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_FULLSCREEN_CONTROLLER_H_
 #define CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_FULLSCREEN_CONTROLLER_H_
 
 #include <set>
 
 #include "base/macros.h"
@@ skipping 105 matching lines @@
   // Overrde from ExclusiveAccessControllerBase.
   void OnTabDetachedFromView(content::WebContents* web_contents) override;
   void OnTabClosing(content::WebContents* web_contents) override;
   bool HandleUserPressedEscape() override;
 
   void ExitExclusiveAccessToPreviousState() override;
   GURL GetURLForExclusiveAccessBubble() const override;
   void ExitExclusiveAccessIfNecessary() override;
   // Callbacks /////////////////////////////////////////////////////////////////
 
+  // Called by Browser::WindowFullscreenStateWillChange.
+  void WindowFullscreenStateWillChange();
+
   // Called by Browser::WindowFullscreenStateChanged.
   void WindowFullscreenStateChanged();
 
  private:
   friend class FullscreenControllerTest;
 
   enum FullscreenInternalOption {
     BROWSER,
     TAB
   };
@@ skipping 57 matching lines @@
   // Used in testing to confirm proper behavior for specific, privileged
   // fullscreen cases.
   bool is_privileged_fullscreen_for_testing_;
 
   base::WeakPtrFactory<FullscreenController> ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FullscreenController);
 };
 
 #endif  // CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_FULLSCREEN_CONTROLLER_H_