Loading/Creating images for mutiple scale factors on the fly

ui/gfx/image/image_skia_rep.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 "ui/gfx/image/image_skia_rep.h"
 
+#include "ui/gfx/size.h"
+
 namespace gfx {
 
 ImageSkiaRep::ImageSkiaRep()
     : scale_factor_(ui::SCALE_FACTOR_NONE) {
 }
 
 ImageSkiaRep::~ImageSkiaRep() {
 }
 
-ImageSkiaRep::ImageSkiaRep(int width, int height,
+ImageSkiaRep::ImageSkiaRep(const gfx::Size& size,
                            ui::ScaleFactor scale_factor)
     : scale_factor_(scale_factor) {
   float scale = ui::GetScaleFactorScale(scale_factor);
   bitmap_.setConfig(SkBitmap::kARGB_8888_Config,
-                    static_cast<int>(width * scale),
-                    static_cast<int>(height * scale));
+                    static_cast<int>(size.width() * scale),
+                    static_cast<int>(size.height() * scale));
   bitmap_.allocPixels();
 }
 
 ImageSkiaRep::ImageSkiaRep(const SkBitmap& src)
     : bitmap_(src),
       scale_factor_(ui::SCALE_FACTOR_NONE) {
 }
 
 ImageSkiaRep::ImageSkiaRep(const SkBitmap& src,
                            ui::ScaleFactor scale_factor)
@@ skipping 19 matching lines @@
 int ImageSkiaRep::GetHeight() const {
   return static_cast<int>(bitmap_.height() /
       ui::GetScaleFactorScale(scale_factor_));
 }
 
 float ImageSkiaRep::GetScale() const {
   return ui::GetScaleFactorScale(scale_factor_);
 }
 
 }  // namespace gfx