[Panel refactor] Deprecate old panels.

chrome/browser/ui/panels/detached_panel_strip.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_DETACHED_PANEL_STRIP_H_
 #define CHROME_BROWSER_UI_PANELS_DETACHED_PANEL_STRIP_H_
 
 #include <set>
 #include "base/basictypes.h"
 #include "chrome/browser/ui/panels/panel.h"
 #include "chrome/browser/ui/panels/panel_strip.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/rect.h"
 
-class Browser;
 class PanelManager;
 
 // This class manages a group of free-floating panels.
 class DetachedPanelStrip : public PanelStrip {
  public:
   typedef std::set<Panel*> Panels;
 
   explicit DetachedPanelStrip(PanelManager* panel_manager);
   virtual ~DetachedPanelStrip();
 
@@ skipping 67 matching lines @@
   PanelPlacement saved_panel_placement_;
 
   // Default top-left position to use for next detached panel if position is
   // unspecified by panel creator.
   gfx::Point default_panel_origin_;
 
   DISALLOW_COPY_AND_ASSIGN(DetachedPanelStrip);
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_DETACHED_PANEL_STRIP_H_