Make various views SetShape() methods take an unique_ptr.

ui/views/widget/native_widget_mac.h

 // Copyright 2014 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_NATIVE_WIDGET_MAC_H_
 #define UI_VIEWS_WIDGET_NATIVE_WIDGET_MAC_H_
 
 #include "base/macros.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/views/widget/native_widget_private.h"
 
 #if defined(__OBJC__)
 @class NativeWidgetMacNSWindow;
 #else
 class NativeWidgetMacNSWindow;
 #endif
 
 namespace views {
 namespace test {
 class HitTestNativeWidgetMac;
 class MockNativeWidgetMac;
 }
 
 class BridgedNativeWidget;
 
 class VIEWS_EXPORT NativeWidgetMac : public internal::NativeWidgetPrivate {
  public:
-  NativeWidgetMac(internal::NativeWidgetDelegate* delegate);
+  explicit NativeWidgetMac(internal::NativeWidgetDelegate* delegate);
   ~NativeWidgetMac() override;
 
   // Retrieves the bridge associated with the given NSWindow. Returns null if
   // the supplied handle has no associated Widget.
   static BridgedNativeWidget* GetBridgeForNativeWindow(
       gfx::NativeWindow window);
 
   // Return true if the delegate's modal type is window-modal. These display as
   // a native window "sheet", and have a different lifetime to regular windows.
   bool IsWindowModalSheet() const;
@@ skipping 38 matching lines @@
   void InitModalType(ui::ModalType modal_type) override;
   gfx::Rect GetWindowBoundsInScreen() const override;
   gfx::Rect GetClientAreaBoundsInScreen() const override;
   gfx::Rect GetRestoredBounds() const override;
   std::string GetWorkspace() const override;
   void SetBounds(const gfx::Rect& bounds) override;
   void SetSize(const gfx::Size& size) override;
   void StackAbove(gfx::NativeView native_view) override;
   void StackAtTop() override;
   void StackBelow(gfx::NativeView native_view) override;
-  void SetShape(SkRegion* shape) override;
+  void SetShape(std::unique_ptr<SkRegion> shape) override;
   void Close() override;
   void CloseNow() override;
   void Show() override;
   void Hide() override;
   void ShowMaximizedWithBounds(const gfx::Rect& restored_bounds) override;
   void ShowWithWindowState(ui::WindowShowState state) override;
   bool IsVisible() const override;
   void Activate() override;
   void Deactivate() override;
   bool IsActive() const override;
@@ skipping 55 matching lines @@
 
   // Internal name.
   std::string name_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeWidgetMac);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_NATIVE_WIDGET_MAC_H_