Remove some implicit Point to PointF conversions, add helpers.

ui/gfx/image/image_skia_operations.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_operations.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "skia/ext/image_operations.h"
 #include "ui/gfx/canvas.h"
@@ skipping 12 matching lines @@
 #include "ui/gfx/skia_util.h"
 
 namespace gfx {
 namespace {
 
 gfx::Size DIPToPixelSize(gfx::Size dip_size, float scale) {
   return ScaleToCeiledSize(dip_size, scale);
 }
 
 gfx::Rect DIPToPixelBounds(gfx::Rect dip_bounds, float scale) {
-  return gfx::Rect(ToFlooredPoint(ScalePoint(dip_bounds.origin(), scale)),
+  return gfx::Rect(ScaleToFlooredPoint(dip_bounds.origin(), scale),
                    DIPToPixelSize(dip_bounds.size(), scale));
 }
 
 // Returns an image rep for the ImageSkiaSource to return to visually indicate
 // an error.
 ImageSkiaRep GetErrorImageRep(float scale, const gfx::Size& pixel_size) {
   SkBitmap bitmap;
   bitmap.allocN32Pixels(pixel_size.width(), pixel_size.height());
   bitmap.eraseColor(SK_ColorRED);
   return gfx::ImageSkiaRep(bitmap, scale);
@@ skipping 495 matching lines @@
     return ImageSkia();
 
   return ImageSkia(new RotatedSource(source, rotation),
       SkBitmapOperations::ROTATION_180_CW == rotation ?
           source.size() :
           gfx::Size(source.height(), source.width()));
 
 }
 
 }  // namespace gfx