Initial skeleton of high-contrast mode.

third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

 /*
  * Copyright (C) 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 3048 matching lines @@
 #if DCHECK_IS_ON()
   if (!GetLayoutObject().View()->GetFrame() ||
       !GetLayoutObject().View()->GetFrame()->ShouldThrottleRendering())
     paint_info.paint_layer->GetLayoutObject().AssertSubtreeIsLaidOut();
 #endif
 
   float device_scale_factor = blink::DeviceScaleFactorDeprecated(
       paint_info.paint_layer->GetLayoutObject().GetFrame());
   context.SetDeviceScaleFactor(device_scale_factor);
 
+  Settings* settings = GetLayoutObject().GetFrame()->GetSettings();
+  HighContrastSettings high_contrast_settings;
+  high_contrast_settings.mode = settings->GetHighContrastMode();
+  high_contrast_settings.grayscale = settings->GetHighContrastGrayscale();
+  high_contrast_settings.contrast = settings->GetHighContrastContrast();
+  context.SetHighContrast(high_contrast_settings);
+
   if (paint_info.paint_layer->GetCompositingState() !=
       kPaintsIntoGroupedBacking) {
     // FIXME: GraphicsLayers need a way to split for multicol.
     PaintLayerPaintingInfo painting_info(
         paint_info.paint_layer, LayoutRect(dirty_rect), kGlobalPaintNormalPhase,
         paint_info.paint_layer->SubpixelAccumulation());
     PaintLayerPainter(*paint_info.paint_layer)
         .PaintLayerContents(context, painting_info, paint_layer_flags);
 
     if (paint_info.paint_layer->ContainsDirtyOverlayScrollbars())
@@ skipping 561 matching lines @@
   } else if (graphics_layer == decoration_outline_layer_.get()) {
     name = "Decoration Layer";
   } else {
     NOTREACHED();
   }
 
   return name;
 }
 
 }  // namespace blink