Fixes bug in instant that resulted in flickery fade. The problem would

chrome/browser/ui/cocoa/browser_window_cocoa.h

 // Copyright (c) 2010 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_COCOA_BROWSER_WINDOW_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_COCOA_H_
 #pragma once
 
 #include "base/scoped_nsobject.h"
 #include "base/task.h"
@@ skipping 92 matching lines @@
   virtual void ShowCreateWebAppShortcutsDialog(TabContents* tab_contents);
   virtual void ShowCreateChromeAppShortcutsDialog(Profile* profile,
                                                   const Extension* app);
   virtual void Cut();
   virtual void Copy();
   virtual void Paste();
   virtual void ToggleTabStripMode();
   virtual void OpenTabpose();
   virtual void PrepareForInstant();
   virtual void ShowInstant(TabContents* preview_contents);
-  virtual void HideInstant();
+  virtual void HideInstant(bool instant_is_active);
   virtual gfx::Rect GetInstantBounds();
 
   // Overridden from NotificationObserver
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   // Adds the given FindBar cocoa controller to this browser window.
   void AddFindBar(FindBarCocoaController* find_bar_cocoa_controller);
 
@@ skipping 10 matching lines @@
   void UpdateSidebarForContents(TabContents* tab_contents);
 
   NotificationRegistrar registrar_;
   Browser* browser_;  // weak, owned by controller
   BrowserWindowController* controller_;  // weak, owns us
   ScopedRunnableMethodFactory<Browser> confirm_close_factory_;
   scoped_nsobject<NSString> pending_window_title_;
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_COCOA_H_