ui/gfx: Make gfx::Canvas inherit from gfx::CanvasSkia.

ui/views/button_drag_utils.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/views/button_drag_utils.h"
 
 #include "base/utf_string_conversions.h"
 #include "googleurl/src/gurl.h"
 #include "grit/ui_resources.h"
 #include "ui/base/dragdrop/drag_utils.h"
 #include "ui/base/dragdrop/os_exchange_data.h"
 #include "ui/base/resource/resource_bundle.h"
-#include "ui/gfx/canvas_skia.h"
+#include "ui/gfx/canvas.h"
 #include "ui/views/controls/button/text_button.h"
 
 namespace button_drag_utils {
 
 // Maximum width of the link drag image in pixels.
 static const int kLinkDragImageMaxWidth = 200;
 
 void SetURLAndDragImage(const GURL& url,
                         const string16& title,
                         const SkBitmap& icon,
                         ui::OSExchangeData* data) {
   DCHECK(url.is_valid() && data);
 
   data->SetURL(url, title);
 
   // Create a button to render the drag image for us.
   views::TextButton button(NULL,
                            title.empty() ? UTF8ToUTF16(url.spec()) : title);
   button.set_max_width(kLinkDragImageMaxWidth);
   if (icon.isNull()) {
     button.SetIcon(*ResourceBundle::GetSharedInstance().GetBitmapNamed(
                    IDR_DEFAULT_FAVICON));
   } else {
     button.SetIcon(icon);
   }
   gfx::Size prefsize = button.GetPreferredSize();
   button.SetBounds(0, 0, prefsize.width(), prefsize.height());
 
   // Render the image.
-  gfx::CanvasSkia canvas(prefsize, false);
+  gfx::Canvas canvas(prefsize, false);
   button.PaintButton(&canvas, views::TextButton::PB_FOR_DRAG);
   drag_utils::SetDragImageOnDataObject(canvas, prefsize,
       gfx::Point(prefsize.width() / 2, prefsize.height() / 2), data);
 }
 
 }  // namespace button_drag_utils