app_list: Add transition for apps grid and search results.

ui/app_list/search_result_list_view.h

Index: ui/app_list/search_result_list_view.h
diff --git a/ui/app_list/search_result_list_view.h b/ui/app_list/search_result_list_view.h
index cd956d515320e42874f8f86577c4c3ca00fca51f..2ba4f7dd18c0cbb4382cf5d30fd424bbda55e459 100644
--- a/ui/app_list/search_result_list_view.h
+++ b/ui/app_list/search_result_list_view.h
@@ -33,6 +33,9 @@ class SearchResultListView : public views::View,
 
   bool IsResultViewSelected(const SearchResultView* result_view) const;
 
+  // Overridden from views::View:
+  virtual bool OnKeyPressed(const views::KeyEvent& event) OVERRIDE;
+
  private:
   // Helper function to get SearchResultView at given |index|.
   SearchResultView* GetResultViewAt(int index);
@@ -44,9 +47,6 @@ class SearchResultListView : public views::View,
   // pending call.
   void ScheduleUpdate();
 
-  // Overridden from views::View:
-  virtual bool OnKeyPressed(const views::KeyEvent& event) OVERRIDE;
-
   // Overridden from views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
                              const views::Event& event) OVERRIDE;