Add keyword_subset field template and generate text-decoration-line.

third_party/WebKit/Source/core/style/ComputedStyleConstants.h

Index: third_party/WebKit/Source/core/style/ComputedStyleConstants.h
diff --git a/third_party/WebKit/Source/core/style/ComputedStyleConstants.h b/third_party/WebKit/Source/core/style/ComputedStyleConstants.h
index 67a66e06be8b810017c60e9d6ed14df5f2e92691..1df26af1e88bde04c5a02f54335893f3fa532a74 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyleConstants.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyleConstants.h
@@ -202,27 +202,6 @@ enum QuoteType { OPEN_QUOTE, CLOSE_QUOTE, NO_OPEN_QUOTE, NO_CLOSE_QUOTE };
 
 enum EAnimPlayState { kAnimPlayStatePlaying, kAnimPlayStatePaused };
 
-static const size_t kTextDecorationBits = 4;
-enum class TextDecoration : unsigned {
-  kNone = 0x0,
-  kUnderline = 0x1,
-  kOverline = 0x2,
-  kLineThrough = 0x4,
-  kBlink = 0x8
-};
-inline TextDecoration operator|(TextDecoration a, TextDecoration b) {
-  return static_cast<TextDecoration>(static_cast<unsigned>(a) |
-                                     static_cast<unsigned>(b));
-}
-inline TextDecoration& operator|=(TextDecoration& a, TextDecoration b) {
-  return a = static_cast<TextDecoration>(static_cast<unsigned>(a) |
-                                         static_cast<unsigned>(b));
-}
-inline TextDecoration& operator^=(TextDecoration& a, TextDecoration b) {
-  return a = static_cast<TextDecoration>(static_cast<unsigned>(a) ^
-                                         static_cast<unsigned>(b));
-}
-
 enum TextDecorationStyle {
   kTextDecorationStyleSolid,
   kTextDecorationStyleDouble,