Factor more colors into NativeTheme.

ui/gfx/native_theme_chromeos.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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_GFX_NATIVE_THEME_CHROMEOS_H_
 #define UI_GFX_NATIVE_THEME_CHROMEOS_H_
 
 #include <map>
 #include "base/compiler_specific.h"
 #include "ui/gfx/native_theme_base.h"
 
 class SkBitmap;
 
 namespace gfx {
 
 class NativeThemeChromeos : public NativeThemeBase {
  public:
   static const NativeThemeChromeos* instance();
 
  private:
   NativeThemeChromeos();
   virtual ~NativeThemeChromeos();
 
   // NativeTheme overrides
   virtual gfx::Size GetPartSize(Part part,
                                 State state,
                                 const ExtraParams& extra) const OVERRIDE;
 
-  // NativeThemeLinux overrides
+  // NativeThemeBase overrides
+  virtual SkColor GetSystemColor(ColorId color_id) const OVERRIDE;
   virtual void PaintScrollbarTrack(SkCanvas* canvas,
       Part part, State state,
       const ScrollbarTrackExtraParams& extra_params,
       const gfx::Rect& rect) const OVERRIDE;
   virtual void PaintArrowButton(SkCanvas* canvas,
       const gfx::Rect& rect, Part direction, State state) const OVERRIDE;
   virtual void PaintScrollbarThumb(SkCanvas* canvas,
       Part part, State state, const gfx::Rect& rect) const OVERRIDE;
 
   // Draw the checkbox.
@@ skipping 59 matching lines @@
   // ownership of the pointers.
   typedef std::map<int, SkBitmap*> SkImageMap;
   mutable SkImageMap horizontal_bitmaps_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeThemeChromeos);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_NATIVE_THEME_CHROMEOS_H_