[NOT FOR COMMIT] Fully replace SkCanvas uses.

ui/native_theme/native_theme.h

 // 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.
 
 #ifndef UI_NATIVE_THEME_NATIVE_THEME_H_
 #define UI_NATIVE_THEME_NATIVE_THEME_H_
 
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "build/build_config.h"
+#include "skia/ext/cdl_common.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/native_theme/native_theme_export.h"
 
-class SkCanvas;
-
 namespace gfx {
 class Rect;
 class Size;
 }
 
 namespace ui {
 
 class NativeThemeObserver;
 
 // This class supports drawing UI controls (like buttons, text fields, lists,
@@ skipping 194 matching lines @@
     TextFieldExtraParams text_field;
     TrackbarExtraParams trackbar;
   };
 
   // Return the size of the part.
   virtual gfx::Size GetPartSize(Part part,
                                 State state,
                                 const ExtraParams& extra) const = 0;
 
   // Paint the part to the canvas.
-  virtual void Paint(SkCanvas* canvas,
+  virtual void Paint(CdlCanvas* canvas,
                      Part part,
                      State state,
                      const gfx::Rect& rect,
                      const ExtraParams& extra) const = 0;
 
   // Paint part during state transition, used for overlay scrollbar state
   // transition animation.
-  virtual void PaintStateTransition(SkCanvas* canvas,
+  virtual void PaintStateTransition(CdlCanvas* canvas,
                                     Part part,
                                     State startState,
                                     State endState,
                                     double progress,
                                     const gfx::Rect& rect,
                                     ScrollbarOverlayColorTheme theme) const {}
 
   // Supports theme specific colors.
   void SetScrollbarColors(unsigned inactive_color,
                           unsigned active_color,
@@ skipping 136 matching lines @@
  private:
   // Observers to notify when the native theme changes.
   base::ObserverList<NativeThemeObserver> native_theme_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeTheme);
 };
 
 }  // namespace ui
 
 #endif  // UI_NATIVE_THEME_NATIVE_THEME_H_