Implement CSS3TextDecorations runtime flag in favor of CSS3_TEXT

Source/core/rendering/style/RenderStyle.cpp

Index: Source/core/rendering/style/RenderStyle.cpp
diff --git a/Source/core/rendering/style/RenderStyle.cpp b/Source/core/rendering/style/RenderStyle.cpp
index 761c0d5e9501a9b9e70b59db08c45870a56b1561..afa29e298984124cb0764d7e90faeba72c8e4fc3 100644
--- a/Source/core/rendering/style/RenderStyle.cpp
+++ b/Source/core/rendering/style/RenderStyle.cpp
@@ -642,10 +642,8 @@ StyleDifference RenderStyle::diff(const RenderStyle* other, unsigned& changedCon
         || rareInheritedData->userSelect != other->rareInheritedData->userSelect
         || rareNonInheritedData->userDrag != other->rareNonInheritedData->userDrag
         || rareNonInheritedData->m_borderFit != other->rareNonInheritedData->m_borderFit
-#if ENABLE(CSS3_TEXT)
         || rareNonInheritedData->m_textDecorationStyle != other->rareNonInheritedData->m_textDecorationStyle
         || rareNonInheritedData->m_textDecorationColor != other->rareNonInheritedData->m_textDecorationColor
-#endif // CSS3_TEXT
         || rareInheritedData->textFillColor != other->rareInheritedData->textFillColor
         || rareInheritedData->textStrokeColor != other->rareInheritedData->textStrokeColor
         || rareInheritedData->textEmphasisColor != other->rareInheritedData->textEmphasisColor
@@ -1352,11 +1350,9 @@ Color RenderStyle::colorIncludingFallback(int colorProperty, bool visitedLink) c
     case CSSPropertyWebkitColumnRuleColor:
         result = visitedLink ? visitedLinkColumnRuleColor() : columnRuleColor();
         break;
-#if ENABLE(CSS3_TEXT)
-    case CSSPropertyWebkitTextDecorationColor:
+    case CSSPropertyTextDecorationColor:
         // Text decoration color fallback is handled in RenderObject::decorationColor.
         return visitedLink ? visitedLinkTextDecorationColor() : textDecorationColor();
-#endif // CSS3_TEXT
     case CSSPropertyWebkitTextEmphasisColor:
         result = visitedLink ? visitedLinkTextEmphasisColor() : textEmphasisColor();
         break;
@@ -1388,11 +1384,9 @@ Color RenderStyle::visitedDependentColor(int colorProperty) const
 
     Color visitedColor = colorIncludingFallback(colorProperty, true);
 
-#if ENABLE(CSS3_TEXT)
     // Text decoration color validity is preserved (checked in RenderObject::decorationColor).
-    if (colorProperty == CSSPropertyWebkitTextDecorationColor)
+    if (colorProperty == CSSPropertyTextDecorationColor)
         return visitedColor;
-#endif // CSS3_TEXT
 
     // FIXME: Technically someone could explicitly specify the color transparent, but for now we'll just
     // assume that if the background color is transparent that it wasn't set. Note that it's weird that