Change Painter factory functions to unique_ptr

ash/common/wm/workspace/phantom_window_controller.cc

 // 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.
 
 #include "ash/common/wm/workspace/phantom_window_controller.h"
 
 #include <math.h>
 
 #include "ash/common/wm/root_window_finder.h"
 #include "ash/common/wm_lookup.h"
@@ skipping 112 matching lines @@
       WmLookup::Get()->GetWindowForWidget(phantom_widget.get());
   phantom_widget_window->SetShellWindowId(kShellWindowId_PhantomWindow);
   phantom_widget->SetBounds(bounds_in_screen);
   // TODO(sky): I suspect this is never true, verify that.
   if (phantom_widget_window->GetParent() == window_->GetParent()) {
     phantom_widget_window->GetParent()->StackChildAbove(phantom_widget_window,
                                                         window_);
   }
 
   const int kImages[] = IMAGE_GRID(IDR_AURA_PHANTOM_WINDOW);
-  views::Painter* background_painter =
-      views::Painter::CreateImageGridPainter(kImages);
   views::View* content_view = new views::View;
-  content_view->set_background(
-      views::Background::CreateBackgroundPainter(true, background_painter));
+  content_view->set_background(views::Background::CreateBackgroundPainter(
+      views::Painter::CreateImageGridPainter(kImages)));
   phantom_widget->SetContentsView(content_view);
 
   // Show the widget after all the setups.
   phantom_widget->Show();
 
   // Fade the window in.
   ui::Layer* widget_layer = phantom_widget_window->GetLayer();
   widget_layer->SetOpacity(0);
   ui::ScopedLayerAnimationSettings scoped_setter(widget_layer->GetAnimator());
   scoped_setter.SetTransitionDuration(
       base::TimeDelta::FromMilliseconds(kAnimationDurationMs));
   widget_layer->SetOpacity(1);
 
   return phantom_widget;
 }
 
 }  // namespace ash