app_list: Add transition for apps grid and search results.

ui/app_list/search_box_view.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 UI_APP_LIST_SEARCH_BOX_VIEW_H_
 #define UI_APP_LIST_SEARCH_BOX_VIEW_H_
 #pragma once
 
 #include <string>
 
@@ skipping 18 matching lines @@
 class SearchBoxView : public views::View,
                       public views::TextfieldController,
                       public SearchBoxModelObserver {
  public:
   explicit SearchBoxView(SearchBoxViewDelegate* delegate);
   virtual ~SearchBoxView();
 
   void SetModel(SearchBoxModel* model);
 
   views::Textfield* search_box() { return search_box_; }
-  void set_grid_view(View* grid_view) { grid_view_ = grid_view; }
-  void set_results_view(View* results_view) { results_view_ = results_view; }
+
+  void set_contents_view(View* contents_view) {
+    contents_view_ = contents_view;
+  }
 
   // Overridden from views::View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
 
  private:
   // Updates model text and selection model with current Textfield info.
   void UpdateModel();
 
   // Fires query change notification.
   void NotifyQueryChanged();
 
   // Overridden from views::TextfieldController:
   virtual void ContentsChanged(views::Textfield* sender,
                                const string16& new_contents) OVERRIDE;
   virtual bool HandleKeyEvent(views::Textfield* sender,
                               const views::KeyEvent& key_event) OVERRIDE;
 
   // Overridden from SearchBoxModelObserver:
   virtual void IconChanged() OVERRIDE;
   virtual void HintTextChanged() OVERRIDE;
   virtual void SelectionModelChanged() OVERRIDE;
   virtual void TextChanged() OVERRIDE;
 
   SearchBoxViewDelegate* delegate_;  // Not owned.
   SearchBoxModel* model_;  // Owned by AppListModel
 
   views::ImageView* icon_view_;  // Owned by views hierarchy
   views::Textfield* search_box_;  // Owned by views hierarchy
-  views::View* grid_view_;  // Owned by views hierarchy
-  views::View* results_view_;  // Owned by views hierarchy
+  views::View* contents_view_;  // Owned by views hierarchy
 
   DISALLOW_COPY_AND_ASSIGN(SearchBoxView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_SEARCH_BOX_VIEW_H_