Remove -webkit-user-drag

sky/engine/core/rendering/style/RenderStyleConstants.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 97 matching lines @@
 enum EFlexDirection { FlowRow, FlowRowReverse, FlowColumn, FlowColumnReverse };
 enum EFlexWrap { FlexNoWrap, FlexWrap, FlexWrapReverse };
 enum EJustifyContent { JustifyFlexStart, JustifyFlexEnd, JustifyCenter, JustifySpaceBetween, JustifySpaceAround };
 
 // CSS3 User Modify Properties
 
 enum EUserModify {
     READ_ONLY, READ_WRITE, READ_WRITE_PLAINTEXT_ONLY
 };
 
-// CSS3 User Drag Values
-
-enum EUserDrag {
-    DRAG_AUTO, DRAG_NONE, DRAG_ELEMENT
-};
-
 // CSS3 User Select Values
 
 enum EUserSelect {
     SELECT_NONE, SELECT_TEXT, SELECT_ALL
 };
 
 // CSS3 Image Values
 enum ObjectFit { ObjectFitFill, ObjectFitContain, ObjectFitCover, ObjectFitNone, ObjectFitScaleDown };
 
 // Word Break Values. Matches WinIE, rather than CSS3
@@ skipping 150 matching lines @@
 static const float maximumAllowedFontSize = 1000000.0f;
 
 enum TextIndentLine { TextIndentFirstLine, TextIndentEachLine };
 enum TextIndentType { TextIndentNormal, TextIndentHanging };
 
 enum CSSBoxType { BoxMissing = 0, MarginBox, BorderBox, PaddingBox, ContentBox };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_RENDERING_STYLE_RENDERSTYLECONSTANTS_H_