Fixes bug in instant where we would end up incorrectly using the

chrome/test/base/test_browser_window.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_TEST_BASE_TEST_BROWSER_WINDOW_H_
 #define CHROME_TEST_BASE_TEST_BROWSER_WINDOW_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 87 matching lines @@
   virtual void Cut() OVERRIDE {}
   virtual void Copy() OVERRIDE {}
   virtual void Paste() OVERRIDE {}
 #if defined(OS_MACOSX)
   virtual void OpenTabpose() OVERRIDE {}
   virtual void SetPresentationMode(bool presentation_mode) OVERRIDE {}
   virtual bool InPresentationMode() OVERRIDE;
 #endif
 
   virtual void ShowInstant(TabContentsWrapper* preview_contents) OVERRIDE {}
-  virtual void HideInstant(bool instant_is_active) OVERRIDE {}
+  virtual void HideInstant() OVERRIDE {}
   virtual gfx::Rect GetInstantBounds() OVERRIDE;
   virtual WindowOpenDisposition GetDispositionForPopupBounds(
       const gfx::Rect& bounds) OVERRIDE;
   virtual FindBar* CreateFindBar() OVERRIDE;
   virtual void ShowAvatarBubble(TabContents* tab_contents,
                                 const gfx::Rect& rect) OVERRIDE {}
 
 #if defined(OS_CHROMEOS)
   virtual void ShowKeyboardOverlay(gfx::NativeWindow owning_window) OVERRIDE {}
 #endif
 
  protected:
   virtual void DestroyBrowser() OVERRIDE {}
 
  private:
   TestLocationBar location_bar_;
 
   DISALLOW_COPY_AND_ASSIGN(TestBrowserWindow);
 };
 
 #endif  // CHROME_TEST_BASE_TEST_BROWSER_WINDOW_H_