Revert "Revert "Implement CSS3TextDecorations runtime flag in favor of CSS3_TEXT""

Source/core/css/CSSComputedStyleDeclaration.cpp

Index: Source/core/css/CSSComputedStyleDeclaration.cpp
diff --git a/Source/core/css/CSSComputedStyleDeclaration.cpp b/Source/core/css/CSSComputedStyleDeclaration.cpp
index 474c08442c1adfff7c3a03a2874bbfed574fbe43..a5ef9c977e7db2b1f0f074aaac49bf380c7f7cfe 100644
--- a/Source/core/css/CSSComputedStyleDeclaration.cpp
+++ b/Source/core/css/CSSComputedStyleDeclaration.cpp
@@ -171,10 +171,10 @@ static const CSSPropertyID staticComputableProperties[] = {
     CSSPropertyTabSize,
     CSSPropertyTextAlign,
     CSSPropertyTextDecoration,
+    CSSPropertyTextDecorationLine,
+    CSSPropertyTextDecorationStyle,
+    CSSPropertyTextDecorationColor,
 #if ENABLE(CSS3_TEXT)
-    CSSPropertyWebkitTextDecorationLine,
-    CSSPropertyWebkitTextDecorationStyle,
-    CSSPropertyWebkitTextDecorationColor,
     CSSPropertyWebkitTextAlignLast,
     CSSPropertyWebkitTextUnderlinePosition,
 #endif // CSS3_TEXT
@@ -1323,7 +1323,6 @@ static PassRefPtr<CSSValue> renderTextDecorationFlagsToCSSValue(int textDecorati
     return list;
 }
 
-#if ENABLE(CSS3_TEXT)
 static PassRefPtr<CSSValue> renderTextDecorationStyleFlagsToCSSValue(TextDecorationStyle textDecorationStyle)
 {
     switch (textDecorationStyle) {
@@ -1342,7 +1341,6 @@ static PassRefPtr<CSSValue> renderTextDecorationStyleFlagsToCSSValue(TextDecorat
     ASSERT_NOT_REACHED();
     return cssValuePool().createExplicitInitialValue();
 }
-#endif // CSS3_TEXT
 
 static PassRefPtr<CSSValue> fillRepeatToCSSValue(EFillRepeat xRepeat, EFillRepeat yRepeat)
 {
@@ -2134,14 +2132,13 @@ PassRefPtr<CSSValue> CSSComputedStyleDeclaration::getPropertyCSSValue(CSSPropert
         case CSSPropertyTextAlign:
             return cssValuePool().createValue(style->textAlign());
         case CSSPropertyTextDecoration:
+        case CSSPropertyTextDecorationLine:
             return renderTextDecorationFlagsToCSSValue(style->textDecoration());
-#if ENABLE(CSS3_TEXT)
-        case CSSPropertyWebkitTextDecorationLine:
-            return renderTextDecorationFlagsToCSSValue(style->textDecoration());
-        case CSSPropertyWebkitTextDecorationStyle:
+        case CSSPropertyTextDecorationStyle:
             return renderTextDecorationStyleFlagsToCSSValue(style->textDecorationStyle());
-        case CSSPropertyWebkitTextDecorationColor:
+        case CSSPropertyTextDecorationColor:
             return currentColorOrValidColor(style.get(), style->textDecorationColor());
+#if ENABLE(CSS3_TEXT)
         case CSSPropertyWebkitTextAlignLast:
             return cssValuePool().createValue(style->textAlignLast());
         case CSSPropertyWebkitTextUnderlinePosition: