Get rid of background-clip:text and PaintBehaviorForceBlackText.

sky/engine/core/css/CSSPrimitiveValueMappings.h

 /*
  * Copyright (C) 2007 Alexey Proskuryakov <ap@nypop.com>.
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2009 Jeff Schiller <codedread@gmail.com>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 330 matching lines @@
     switch (e) {
     case BorderFillBox:
         m_value.valueID = CSSValueBorderBox;
         break;
     case PaddingFillBox:
         m_value.valueID = CSSValuePaddingBox;
         break;
     case ContentFillBox:
         m_value.valueID = CSSValueContentBox;
         break;
-    case TextFillBox:
-        m_value.valueID = CSSValueText;
-        break;
     }
 }
 
 template<> inline CSSPrimitiveValue::operator EFillBox() const
 {
     ASSERT(isValueID());
     switch (m_value.valueID) {
     case CSSValueBorder:
     case CSSValueBorderBox:
         return BorderFillBox;
     case CSSValuePadding:
     case CSSValuePaddingBox:
         return PaddingFillBox;
     case CSSValueContent:
     case CSSValueContentBox:
         return ContentFillBox;
-    case CSSValueText:
-        return TextFillBox;
     default:
         break;
     }
 
     ASSERT_NOT_REACHED();
     return BorderFillBox;
 }
 
 template<> inline CSSPrimitiveValue::CSSPrimitiveValue(EFillRepeat e)
     : CSSValue(PrimitiveClass)
@@ skipping 3093 matching lines @@
     default:
         break;
     }
     ASSERT_NOT_REACHED();
     return ScrollBehaviorInstant;
 }
 
 }
 
 #endif  // SKY_ENGINE_CORE_CSS_CSSPRIMITIVEVALUEMAPPINGS_H_