MacViews: Overlay Scrollbars with Show/Hide Animations

ui/native_theme/native_theme_base.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_BASE_H_
 #define UI_NATIVE_THEME_NATIVE_THEME_BASE_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 45 matching lines @@
       SkCanvas* canvas,
       Part part,
       State state,
       const ScrollbarTrackExtraParams& extra_params,
       const gfx::Rect& rect) const;
   // Draw the scrollbar thumb over the track.
   virtual void PaintScrollbarThumb(
       SkCanvas* canvas,
       Part part,
       State state,
+      const ScrollbarThumbExtraParams& extra_params,
       const gfx::Rect& rect) const;
 
   virtual void PaintScrollbarCorner(SkCanvas* canvas,
                                     State state,
                                     const gfx::Rect& rect) const;
 
   virtual void PaintCheckbox(
       SkCanvas* canvas,
       State state,
       const gfx::Rect& rect,
@@ skipping 132 matching lines @@
 
   // The length of the arrow buttons, 0 means no buttons are drawn.
   unsigned int scrollbar_button_length_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeThemeBase);
 };
 
 }  // namespace ui
 
 #endif  // UI_NATIVE_THEME_NATIVE_THEME_BASE_H_