Implement CSS3TextDecorations runtime flag in favor of CSS3_TEXT

Source/core/rendering/style/RenderStyleConstants.h

Index: Source/core/rendering/style/RenderStyleConstants.h
diff --git a/Source/core/rendering/style/RenderStyleConstants.h b/Source/core/rendering/style/RenderStyleConstants.h
index eea12ff5b27121de4249def2c99d91fe56e3e623..ac899b953d6b8f648b4193db89cecac7defcd9d6 100644
--- a/Source/core/rendering/style/RenderStyleConstants.h
+++ b/Source/core/rendering/style/RenderStyleConstants.h
@@ -340,15 +340,12 @@ inline ETextDecoration& operator|=(ETextDecoration& a, ETextDecoration b) { retu
 
 enum TextDecorationStyle {
     TextDecorationStyleSolid,
-#if ENABLE(CSS3_TEXT)
     TextDecorationStyleDouble,
     TextDecorationStyleDotted,
     TextDecorationStyleDashed,
     TextDecorationStyleWavy
-#endif // CSS3_TEXT
 };
 
-#if ENABLE(CSS3_TEXT)
 enum TextAlignLast {
     TextAlignLastAuto, TextAlignLastStart, TextAlignLastEnd, TextAlignLastLeft, TextAlignLastRight, TextAlignLastCenter, TextAlignLastJustify
 };
@@ -357,7 +354,6 @@ enum TextUnderlinePosition {
     // FIXME: Implement support for 'under left' and 'under right' values.
     TextUnderlinePositionAuto = 0x1, TextUnderlinePositionAlphabetic = 0x2, TextUnderlinePositionUnder = 0x4
 };
-#endif // CSS3_TEXT
 
 enum EPageBreak {
     PBAUTO, PBALWAYS, PBAVOID
@@ -494,9 +490,7 @@ enum DraggableRegionMode { DraggableRegionNone, DraggableRegionDrag, DraggableRe
 // Reasonable maximum to prevent insane font sizes from causing crashes on some platforms (such as Windows).
 static const float maximumAllowedFontSize = 1000000.0f;
 
-#if ENABLE(CSS3_TEXT)
 enum TextIndentLine { TextIndentFirstLine, TextIndentEachLine };
-#endif
 
 } // namespace WebCore