Implement High Contrast mode for Chrome OS

ui/compositor/layer.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_COMPOSITOR_LAYER_H_
 #define UI_COMPOSITOR_LAYER_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 114 matching lines @@
   // The opacity of the layer. The opacity is applied to each pixel of the
   // texture (resulting alpha = opacity * alpha).
   float opacity() const { return opacity_; }
   void SetOpacity(float opacity);
 
   // Blur pixels by this amount in anything below the layer and visible through
   // the layer.
   int background_blur() const { return background_blur_radius_; }
   void SetBackgroundBlur(int blur_radius);
 
+  // Invert the layer.
+  bool invert() const { return invert_; }
+  void SetInvert(bool invert);
+
   // Return the target opacity if animator is running, or the current opacity
   // otherwise.
   float GetTargetOpacity() const;
 
   // Sets the visibility of the Layer. A Layer may be visible but not
   // drawn. This happens if any ancestor of a Layer is not visible.
   void SetVisible(bool visible);
   bool visible() const { return visible_; }
 
   // Returns the target visibility if the animator is running. Otherwise, it
@@ skipping 130 matching lines @@
 
   // If true the layer is always up to date.
   bool layer_updated_externally_;
 
   // Union of damaged rects to be used when compositor is ready to
   // paint the content.
   SkRegion damaged_region_;
 
   float opacity_;
   int background_blur_radius_;
+  bool invert_;
 
   std::string name_;
 
   LayerDelegate* delegate_;
 
   scoped_ptr<LayerAnimator> animator_;
 
   WebKit::WebLayer web_layer_;
   bool web_layer_is_accelerated_;
   bool show_debug_borders_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace ui
 
 #endif  // UI_COMPOSITOR_LAYER_H_