Remove support for -webkit-color-correction (which we've never supported on

Source/core/platform/mock/ScrollbarThemeMock.cpp

 /*
  * Copyright (C) 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 31 matching lines @@
     return cScrollbarThickness[controlSize];
 }
 
 bool ScrollbarThemeMock::usesOverlayScrollbars() const
 {
     return Settings::usesOverlayScrollbars();
 }
 
 void ScrollbarThemeMock::paintTrackBackground(GraphicsContext* context, ScrollbarThemeClient* scrollbar, const IntRect& trackRect)
 {
-    context->fillRect(trackRect, scrollbar->enabled() ? Color::lightGray : Color(0xFFE0E0E0), ColorSpaceDeviceRGB);
+    context->fillRect(trackRect, scrollbar->enabled() ? Color::lightGray : Color(0xFFE0E0E0));
 }
 
 void ScrollbarThemeMock::paintThumb(GraphicsContext* context, ScrollbarThemeClient* scrollbar, const IntRect& thumbRect)
 {
     if (scrollbar->enabled())
-        context->fillRect(thumbRect, Color::darkGray, ColorSpaceDeviceRGB);
+        context->fillRect(thumbRect, Color::darkGray);
 }
 
 }