ui: Make gfx::Size::Scale() mutate the class. Add gfx::ScaleSize() similar to Rect/Point.

webkit/glue/webcursor_aurax11.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 "webkit/glue/webcursor.h"
 
 #include <X11/Xcursor/Xcursor.h>
 #include <X11/Xlib.h>
 #include <X11/cursorfont.h>
 
@@ skipping 13 matching lines @@
   bitmap.setConfig(SkBitmap::kARGB_8888_Config,
                    custom_size_.width(), custom_size_.height());
   bitmap.allocPixels();
   memcpy(bitmap.getAddr32(0, 0), custom_data_.data(), custom_data_.size());
 
   XcursorImage* image = NULL;
   if (scale_factor_ == 1.f) {
     image = ui::SkBitmapToXcursorImage(&bitmap, hotspot_);
   } else {
     gfx::Size scaled_size = gfx::ToFlooredSize(
-        custom_size_.Scale(scale_factor_));
+        gfx::ScaleSize(custom_size_, scale_factor_));
     SkBitmap scaled_bitmap = skia::ImageOperations::Resize(bitmap,
         skia::ImageOperations::RESIZE_BETTER,
         scaled_size.width(),
         scaled_size.height());
     gfx::Point hotspot_point = gfx::ToFlooredPoint(
         gfx::ScalePoint(hotspot_, scale_factor_));
     image = ui::SkBitmapToXcursorImage(&scaled_bitmap, hotspot_point);
   }
   platform_cursor_ = ui::CreateReffedCustomXCursor(image);
   return platform_cursor_;
@@ skipping 37 matching lines @@
 
 void WebCursor::CopyPlatformData(const WebCursor& other) {
   if (platform_cursor_)
     ui::UnrefCustomXCursor(platform_cursor_);
   platform_cursor_ = other.platform_cursor_;
   if (platform_cursor_)
     ui::RefCustomXCursor(platform_cursor_);
 
   scale_factor_ = other.scale_factor_;
 }