Move DIP translation from ui/aura to ui/compositor

ash/wm/shadow.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/wm/shadow.h"
 
 #include "ash/wm/image_grid.h"
 #include "grit/ui_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/compositor/scoped_layer_animation_settings.h"
@@ skipping 26 matching lines @@
 
 namespace ash {
 namespace internal {
 
 Shadow::Shadow() : style_(STYLE_ACTIVE) {
 }
 
 Shadow::~Shadow() {
 }
 
-void Shadow::Init(aura::Window* window, Style style) {
+void Shadow::Init(Style style) {
   style_ = style;
-  image_grid_.reset(new ImageGrid(window));
+  image_grid_.reset(new ImageGrid);
   UpdateImagesForStyle();
   image_grid_->layer()->set_name("Shadow");
   image_grid_->layer()->SetOpacity(GetOpacityForStyle(style_));
 }
 
 void Shadow::SetContentBounds(const gfx::Rect& content_bounds) {
   content_bounds_ = content_bounds;
   UpdateImageGridBounds();
 }
 
@@ skipping 106 matching lines @@
   UpdateImageGridBounds();
 }
 
 void Shadow::UpdateImageGridBounds() {
   // Update bounds based on content bounds and image sizes.
   image_grid_->SetContentBounds(content_bounds_);
 }
 
 }  // namespace internal
 }  // namespace ash