[Panel refactor] Deprecate old panels.

chrome/browser/ui/panels/panel_mouse_watcher.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_PANELS_PANEL_MOUSE_WATCHER_H_
 #define CHROME_BROWSER_UI_PANELS_PANEL_MOUSE_WATCHER_H_
 
 #include "base/gtest_prod_util.h"
 #include "base/observer_list.h"
 
@@ skipping 27 matching lines @@
   // |mouse_position| is in screen coordinates.
   virtual void NotifyMouseMovement(const gfx::Point& mouse_position);
 
   // Returns true if watching mouse movements.
   virtual bool IsActive() const = 0;
 
  private:
   friend class PanelMouseWatcherTest;
   FRIEND_TEST_ALL_PREFIXES(PanelMouseWatcherTest, StartStopWatching);
   friend class BasePanelBrowserTest;
-  friend class OldBasePanelBrowserTest;
 
   // Start/stop tracking mouse movements.
   virtual void Start() = 0;
   virtual void Stop() = 0;
 
   ObserverList<PanelMouseWatcherObserver> observers_;
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_MOUSE_WATCHER_H_