Attempt 2 at:...

views/widget/widget_gtk.h

 // Copyright (c) 2009 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 VIEWS_WIDGET_WIDGET_GTK_H_
 #define VIEWS_WIDGET_WIDGET_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include "app/active_window_watcher_x.h"
@@ skipping 100 matching lines @@
 
   // Overriden from ActiveWindowWatcherX::Observer.
   virtual void ActiveWindowChanged(GdkWindow* active_window);
 
   // Overridden from Widget:
   virtual void Init(gfx::NativeView parent, const gfx::Rect& bounds);
   virtual void SetContentsView(View* view);
   virtual void GetBounds(gfx::Rect* out, bool including_frame) const;
   virtual void SetBounds(const gfx::Rect& bounds);
   virtual void MoveAbove(Widget* other);
-  virtual void SetShape(const gfx::Path& shape);
+  virtual void SetShape(gfx::NativeRegion region);
   virtual void Close();
   virtual void CloseNow();
   virtual void Show();
   virtual void Hide();
   virtual gfx::NativeView GetNativeView() const;
   virtual void PaintNow(const gfx::Rect& update_rect);
   virtual void SetOpacity(unsigned char opacity);
   virtual void SetAlwaysOnTop(bool on_top);
   virtual RootView* GetRootView();
   virtual Widget* GetRootWidget() const;
@@ skipping 294 matching lines @@
   // didn't change. If we didn't cache this and ignore calls when the size
   // hasn't changed, we can end up getting stuck in a never ending loop.
   gfx::Size size_;
 
   DISALLOW_COPY_AND_ASSIGN(WidgetGtk);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_WIDGET_WIDGET_GTK_H_