Revert of Implement unset value handling

Source/core/css/CSSValue.cpp

 /*
  * Copyright (C) 2011 Andreas Kling (kling@webkit.org)
  *
  * 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 35 matching lines @@
 #include "core/css/CSSInheritedValue.h"
 #include "core/css/CSSInitialValue.h"
 #include "core/css/CSSLineBoxContainValue.h"
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/css/CSSReflectValue.h"
 #include "core/css/CSSSVGDocumentValue.h"
 #include "core/css/CSSShadowValue.h"
 #include "core/css/CSSTimingFunctionValue.h"
 #include "core/css/CSSTransformValue.h"
 #include "core/css/CSSUnicodeRangeValue.h"
-#include "core/css/CSSUnsetValue.h"
 #include "core/css/CSSValueList.h"
 
 namespace blink {
 
 struct SameSizeAsCSSValue : public RefCountedWillBeGarbageCollectedFinalized<SameSizeAsCSSValue>
 {
     uint32_t bitfields;
 };
 
 COMPILE_ASSERT(sizeof(CSSValue) <= sizeof(SameSizeAsCSSValue), CSS_value_should_stay_small);
@@ skipping 48 matching lines @@
         case RadialGradientClass:
             return compareCSSValues<CSSRadialGradientValue>(*this, other);
         case CrossfadeClass:
             return compareCSSValues<CSSCrossfadeValue>(*this, other);
         case ImageClass:
             return compareCSSValues<CSSImageValue>(*this, other);
         case InheritedClass:
             return compareCSSValues<CSSInheritedValue>(*this, other);
         case InitialClass:
             return compareCSSValues<CSSInitialValue>(*this, other);
-        case UnsetClass:
-            return compareCSSValues<CSSUnsetValue>(*this, other);
         case GridLineNamesClass:
             return compareCSSValues<CSSGridLineNamesValue>(*this, other);
         case GridTemplateAreasClass:
             return compareCSSValues<CSSGridTemplateAreasValue>(*this, other);
         case PrimitiveClass:
             return compareCSSValues<CSSPrimitiveValue>(*this, other);
         case ReflectClass:
             return compareCSSValues<CSSReflectValue>(*this, other);
         case ShadowClass:
             return compareCSSValues<CSSShadowValue>(*this, other);
@@ skipping 50 matching lines @@
     case LinearGradientClass:
         return toCSSLinearGradientValue(this)->customCSSText();
     case RadialGradientClass:
         return toCSSRadialGradientValue(this)->customCSSText();
     case CrossfadeClass:
         return toCSSCrossfadeValue(this)->customCSSText();
     case ImageClass:
         return toCSSImageValue(this)->customCSSText();
     case InheritedClass:
         return toCSSInheritedValue(this)->customCSSText();
-    case UnsetClass:
-        return toCSSUnsetValue(this)->customCSSText();
     case InitialClass:
         return toCSSInitialValue(this)->customCSSText();
     case GridLineNamesClass:
         return toCSSGridLineNamesValue(this)->customCSSText();
     case GridTemplateAreasClass:
         return toCSSGridTemplateAreasValue(this)->customCSSText();
     case PrimitiveClass:
         return toCSSPrimitiveValue(this)->customCSSText();
     case ReflectClass:
         return toCSSReflectValue(this)->customCSSText();
@@ skipping 61 matching lines @@
         return;
     case ImageClass:
         delete toCSSImageValue(this);
         return;
     case InheritedClass:
         delete toCSSInheritedValue(this);
         return;
     case InitialClass:
         delete toCSSInitialValue(this);
         return;
-    case UnsetClass:
-        delete toCSSUnsetValue(this);
-        return;
     case GridLineNamesClass:
         delete toCSSGridLineNamesValue(this);
         return;
     case GridTemplateAreasClass:
         delete toCSSGridTemplateAreasValue(this);
         return;
     case PrimitiveClass:
         delete toCSSPrimitiveValue(this);
         return;
     case ReflectClass:
@@ skipping 74 matching lines @@
         return;
     case ImageClass:
         toCSSImageValue(this)->~CSSImageValue();
         return;
     case InheritedClass:
         toCSSInheritedValue(this)->~CSSInheritedValue();
         return;
     case InitialClass:
         toCSSInitialValue(this)->~CSSInitialValue();
         return;
-    case UnsetClass:
-        toCSSUnsetValue(this)->~CSSUnsetValue();
-        return;
     case GridLineNamesClass:
         toCSSGridLineNamesValue(this)->~CSSGridLineNamesValue();
         return;
     case GridTemplateAreasClass:
         toCSSGridTemplateAreasValue(this)->~CSSGridTemplateAreasValue();
         return;
     case PrimitiveClass:
         toCSSPrimitiveValue(this)->~CSSPrimitiveValue();
         return;
     case ReflectClass:
@@ skipping 74 matching lines @@
         return;
     case ImageClass:
         toCSSImageValue(this)->traceAfterDispatch(visitor);
         return;
     case InheritedClass:
         toCSSInheritedValue(this)->traceAfterDispatch(visitor);
         return;
     case InitialClass:
         toCSSInitialValue(this)->traceAfterDispatch(visitor);
         return;
-    case UnsetClass:
-        toCSSUnsetValue(this)->traceAfterDispatch(visitor);
-        return;
     case GridLineNamesClass:
         toCSSGridLineNamesValue(this)->traceAfterDispatch(visitor);
         return;
     case GridTemplateAreasClass:
         toCSSGridTemplateAreasValue(this)->traceAfterDispatch(visitor);
         return;
     case PrimitiveClass:
         toCSSPrimitiveValue(this)->traceAfterDispatch(visitor);
         return;
     case ReflectClass:
@@ skipping 33 matching lines @@
         toCSSSVGDocumentValue(this)->traceAfterDispatch(visitor);
         return;
     case CSSContentDistributionClass:
         toCSSContentDistributionValue(this)->traceAfterDispatch(visitor);
         return;
     }
     ASSERT_NOT_REACHED();
 }
 
 }