Make various views SetShape() methods take an unique_ptr.

ui/views/widget/desktop_aura/desktop_window_tree_host.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 UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_H_
 
 #include <memory>
 
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/views/views_export.h"
 #include "ui/views/widget/widget.h"
 
 namespace aura {
 class WindowTreeHost;
 class Window;
 
 namespace client {
 class DragDropClient;
 }
-}
+}  // namespace aura
 
 namespace gfx {
 class ImageSkia;
 class Rect;
 }
 
 namespace ui {
 class NativeTheme;
 }
 
@@ skipping 55 matching lines @@
   virtual void GetWindowPlacement(gfx::Rect* bounds,
                                   ui::WindowShowState* show_state) const = 0;
   virtual gfx::Rect GetWindowBoundsInScreen() const = 0;
   virtual gfx::Rect GetClientAreaBoundsInScreen() const = 0;
   virtual gfx::Rect GetRestoredBounds() const = 0;
   virtual std::string GetWorkspace() const = 0;
 
   virtual gfx::Rect GetWorkAreaBoundsInScreen() const = 0;
 
   // Sets the shape of the root window. If |native_region| is NULL then the
-  // window reverts to rectangular. Takes ownership of |native_region|.
-  virtual void SetShape(SkRegion* native_region) = 0;
+  // window reverts to rectangular.
+  virtual void SetShape(std::unique_ptr<SkRegion> native_region) = 0;
 
   virtual void Activate() = 0;
   virtual void Deactivate() = 0;
   virtual bool IsActive() const = 0;
   virtual void Maximize() = 0;
   virtual void Minimize() = 0;
   virtual void Restore() = 0;
   virtual bool IsMaximized() const = 0;
   virtual bool IsMinimized() const = 0;
 
@@ skipping 51 matching lines @@
   // Returns true if the Widget supports translucency.
   virtual bool IsTranslucentWindowOpacitySupported() const = 0;
 
   // Called when the window's size constraints change.
   virtual void SizeConstraintsChanged() = 0;
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_H_