alternate ntp: toolbar background and separator animation

chrome/browser/ui/views/search_view_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_VIEWS_SEARCH_VIEW_CONTROLLER_H_
 #define CHROME_BROWSER_UI_VIEWS_SEARCH_VIEW_CONTROLLER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "chrome/browser/ui/search/search_model_observer.h"
@@ skipping 40 matching lines @@
   // Sets the active tab.
   void SetTabContents(TabContents* tab_contents);
 
   // Stacks the overlay at the top.
   void StackAtTop();
 
   // Invoked when the instant preview is ready to be shown.
   void InstantReady();
 
   // chrome::search::SearchModelObserver overrides:
-  virtual void ModeChanged(const chrome::search::Mode& mode) OVERRIDE;
+  virtual void ModeChanged(const chrome::search::Mode& old_mode,
+                           const chrome::search::Mode& new_mode) OVERRIDE;
 
   // ui::ImplicitAnimationObserver overrides:
   virtual void OnImplicitAnimationsCompleted() OVERRIDE;
 
  private:
   enum State {
     // Search/ntp is not visible.
     STATE_NOT_VISIBLE,
 
     // Layout for the new tab page.
@@ skipping 82 matching lines @@
   // An alias to |contents_container_->active()|, but reparented within
   // |ntp_view_| when in the NTP state.
   views::WebView* content_view_;
 
   OmniboxPopupViewParent* omnibox_popup_view_parent_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchViewController);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_SEARCH_VIEW_CONTROLLER_H_