Remove dependency on ui::ScaleFactor from ui/gfx

ui/gfx/image/image_png_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_png_rep.h"
 
+#include "base/logging.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/size.h"
 
 namespace gfx {
 
 ImagePNGRep::ImagePNGRep()
     : raw_data(NULL),
-      scale_factor(ui::SCALE_FACTOR_NONE) {
+      scale(1.0) {
 }
 
 ImagePNGRep::ImagePNGRep(const scoped_refptr<base::RefCountedMemory>& data,
-                         ui::ScaleFactor data_scale_factor)
+                         float data_scale)
     : raw_data(data),
-      scale_factor(data_scale_factor) {
+      scale(data_scale) {
 }
 
 ImagePNGRep::~ImagePNGRep() {
 }
 
 gfx::Size ImagePNGRep::Size() const {
   // The only way to get the width and height of a raw PNG stream, at least
   // using the gfx::PNGCodec API, is to decode the whole thing.
   CHECK(raw_data.get());
   SkBitmap bitmap;
   if (!gfx::PNGCodec::Decode(raw_data->front(), raw_data->size(),
                              &bitmap)) {
     LOG(ERROR) << "Unable to decode PNG.";
     return gfx::Size(0, 0);
   }
   return gfx::Size(bitmap.width(), bitmap.height());
 }
 
 }  // namespace gfx