Use alias_for with trivial property aliases

Source/core/css/CSSComputedStyleDeclaration.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
@@ skipping 178 matching lines @@
     CSSPropertyWebkitAnimationDelay,
     CSSPropertyWebkitAnimationDirection,
     CSSPropertyWebkitAnimationDuration,
     CSSPropertyWebkitAnimationFillMode,
     CSSPropertyWebkitAnimationIterationCount,
     CSSPropertyWebkitAnimationName,
     CSSPropertyWebkitAnimationPlayState,
     CSSPropertyWebkitAnimationTimingFunction,
     CSSPropertyWebkitAppearance,
     CSSPropertyBackfaceVisibility,
-    CSSPropertyWebkitBackfaceVisibility,
     CSSPropertyWebkitBackgroundClip,
     CSSPropertyWebkitBackgroundComposite,
     CSSPropertyWebkitBackgroundOrigin,
     CSSPropertyWebkitBackgroundSize,
     CSSPropertyWebkitBorderHorizontalSpacing,
     CSSPropertyWebkitBorderImage,
     CSSPropertyWebkitBorderVerticalSpacing,
     CSSPropertyWebkitBoxAlign,
     CSSPropertyWebkitBoxDecorationBreak,
     CSSPropertyWebkitBoxDirection,
     CSSPropertyWebkitBoxFlex,
     CSSPropertyWebkitBoxFlexGroup,
     CSSPropertyWebkitBoxLines,
     CSSPropertyWebkitBoxOrdinalGroup,
     CSSPropertyWebkitBoxOrient,
     CSSPropertyWebkitBoxPack,
     CSSPropertyWebkitBoxReflect,
-    CSSPropertyWebkitBoxShadow,
     CSSPropertyWebkitClipPath,
     CSSPropertyWebkitColumnBreakAfter,
     CSSPropertyWebkitColumnBreakBefore,
     CSSPropertyWebkitColumnBreakInside,
     CSSPropertyWebkitColumnCount,
     CSSPropertyWebkitColumnGap,
     CSSPropertyWebkitColumnRuleColor,
     CSSPropertyWebkitColumnRuleStyle,
     CSSPropertyWebkitColumnRuleWidth,
     CSSPropertyWebkitColumnSpan,
@@ skipping 37 matching lines @@
     CSSPropertyWebkitMaskComposite,
     CSSPropertyWebkitMaskImage,
     CSSPropertyWebkitMaskOrigin,
     CSSPropertyWebkitMaskPosition,
     CSSPropertyWebkitMaskRepeat,
     CSSPropertyWebkitMaskSize,
     CSSPropertyOrder,
     CSSPropertyPerspective,
     CSSPropertyWebkitPerspective,
     CSSPropertyPerspectiveOrigin,
-    CSSPropertyWebkitPerspectiveOrigin,
     CSSPropertyWebkitPrintColorAdjust,
     CSSPropertyWebkitRtlOrdering,
     CSSPropertyShapeOutside,
     CSSPropertyShapeImageThreshold,
     CSSPropertyShapeMargin,
     CSSPropertyWebkitTapHighlightColor,
     CSSPropertyWebkitTextCombine,
     CSSPropertyWebkitTextDecorationsInEffect,
     CSSPropertyWebkitTextEmphasisColor,
     CSSPropertyWebkitTextEmphasisPosition,
     CSSPropertyWebkitTextEmphasisStyle,
     CSSPropertyWebkitTextFillColor,
     CSSPropertyWebkitTextOrientation,
     CSSPropertyWebkitTextSecurity,
     CSSPropertyWebkitTextStrokeColor,
     CSSPropertyWebkitTextStrokeWidth,
     CSSPropertyTransform,
     CSSPropertyWebkitTransform,
     CSSPropertyTransformOrigin,
-    CSSPropertyWebkitTransformOrigin,
     CSSPropertyTransformStyle,
-    CSSPropertyWebkitTransformStyle,
     CSSPropertyWebkitTransitionDelay,
     CSSPropertyWebkitTransitionDuration,
     CSSPropertyWebkitTransitionProperty,
     CSSPropertyWebkitTransitionTimingFunction,
     CSSPropertyWebkitUserDrag,
     CSSPropertyWebkitUserModify,
     CSSPropertyWebkitUserSelect,
     CSSPropertyWebkitWritingMode,
     CSSPropertyWebkitAppRegion,
     CSSPropertyBufferedRendering,
@@ skipping 164 matching lines @@
     // FIXME: Some of these cases could be narrowed down or optimized better.
     switch (propertyID) {
     case CSSPropertyBottom:
     case CSSPropertyGridTemplateColumns:
     case CSSPropertyGridTemplateRows:
     case CSSPropertyHeight:
     case CSSPropertyLeft:
     case CSSPropertyRight:
     case CSSPropertyTop:
     case CSSPropertyPerspectiveOrigin:
-    case CSSPropertyWebkitPerspectiveOrigin:
     case CSSPropertyTransform:
     case CSSPropertyWebkitTransform:
     case CSSPropertyTransformOrigin:
-    case CSSPropertyWebkitTransformOrigin:
     case CSSPropertyMotionPath:
     case CSSPropertyMotionOffset:
     case CSSPropertyMotionRotation:
     case CSSPropertyWidth:
     case CSSPropertyWebkitFilter:
     case CSSPropertyX:
     case CSSPropertyY:
     case CSSPropertyRx:
     case CSSPropertyRy:
         return true;
@@ skipping 197 matching lines @@
     exceptionState.throwDOMException(NoModificationAllowedError, "These styles are computed, and therefore the '" + getPropertyNameString(id) + "' property is read-only.");
 }
 
 DEFINE_TRACE(CSSComputedStyleDeclaration)
 {
     visitor->trace(m_node);
     CSSStyleDeclaration::trace(visitor);
 }
 
 } // namespace blink