Draggable region support for frameless app window on Windows.

chrome/browser/ui/browser_window.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_BROWSER_WINDOW_H_
 #define CHROME_BROWSER_UI_BROWSER_WINDOW_H_
 
 #include "base/callback_forward.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/ui/base_window.h"
@@ skipping 68 matching lines @@
   // events are still fired) until the drag ends, then close. This assumes
   // that the Browser is not immediately destroyed, but will be eventually
   // destroyed by other means (eg, the tab strip going to zero elements).
   // Bad things happen if the Browser dtor is called directly as a result of
   // invoking this method.
   // virtual void Close() = 0;
 
   // Browser::OnWindowDidShow should be called after showing the window.
   // virtual void Show() = 0;
 
-  // No BrowserWindow supports this BaseWindow function.
-  virtual void SetDraggableRegion(SkRegion* region) OVERRIDE {}
-
   //////////////////////////////////////////////////////////////////////////////
   // Browser specific methods:
 
   // Returns a pointer to the testing interface to the Browser window, or NULL
   // if there is none.
   virtual BrowserWindowTesting* GetBrowserWindowTesting() = 0;
 
   // Return the status bubble associated with the frame
   virtual StatusBubble* GetStatusBubble() = 0;
 
@@ skipping 311 matching lines @@
 
   // Returns the ToolbarView.
   virtual ToolbarView* GetToolbarView() const = 0;
 #endif
 
  protected:
   virtual ~BrowserWindowTesting() {}
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_WINDOW_H_