alternate ntp (cros/partial-win): add tab-related stuff and toolbar/tab background change

chrome/browser/ui/search/search_delegate.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_SEARCH_SEARCH_DELEGATE_H_
 #define CHROME_BROWSER_UI_SEARCH_SEARCH_DELEGATE_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "chrome/browser/ui/search/search_model_observer.h"
+#include "chrome/browser/ui/search/toolbar_search_animator.h"
 
 class TabContents;
 
 namespace chrome {
 namespace search {
 
 class SearchModel;
 
 // The SearchDelegate class acts as a helper to the Browser class.
 // It is responsible for routing the changes from the active tab's
@@ skipping 14 matching lines @@
   void OnTabActivated(TabContents* contents);
 
   // When a tab is deactivated, this class no longer observes changes to the
   // tab's model.
   void OnTabDeactivated(TabContents* contents);
 
   // When a tab is dettached, this class no longer observes changes to the
   // tab's model.
   void OnTabDetached(TabContents* contents);
 
+  ToolbarSearchAnimator& toolbar_search_animator() {
+    return toolbar_search_animator_;
+  }
+
  private:
   // Stop observing tab.
   void StopObserveringTab(TabContents* contents);
 
   // Weak.  The Browser class owns this.  The active |tab_model_| state is
   // propagated to the |browser_model_|.
   SearchModel* browser_model_;
 
   // Weak.  The TabContents owns this.  It is the model of the active
   // tab.  Changes to this model are propagated through to the |browser_model_|.
   SearchModel* tab_model_;
 
+  // Animator for fading in toolbar and tab backgrounds when mode changes from
+  // NTP to SEARCH.
+  ToolbarSearchAnimator toolbar_search_animator_;
+
   DISALLOW_COPY_AND_ASSIGN(SearchDelegate);
 };
 
 }  // namespace search
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_SEARCH_SEARCH_DELEGATE_H_