Store border-*-style on SurroundData in ComputedStyle

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

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  *
@@ skipping 77 matching lines @@
   kFirstInternalPseudoId = kPseudoIdScrollbarThumb,
   kElementPseudoIdMask = (1 << (kPseudoIdBefore - kFirstPublicPseudoId)) |
                          (1 << (kPseudoIdAfter - kFirstPublicPseudoId)) |
                          (1 << (kPseudoIdBackdrop - kFirstPublicPseudoId))
 };
 
 enum ColumnFill { kColumnFillBalance, kColumnFillAuto };
 
 enum ColumnSpan { kColumnSpanNone = 0, kColumnSpanAll };
 
-// These have been defined in the order of their precedence for
-// border-collapsing. Do not change this order! This order also must match the
-// order in CSSValueKeywords.in.
-enum class EBorderStyle {

[shend, 2017/05/17 22:18:34]

When you generate EBorderStyle, the generator also generates the CSSValueID
mappings:
https://gist.github.com/nainar/fd091fc658aebc3f5676f16e545e975a/revisions#dif...

You can delete the handwritten mappings in CSSPrimitiveValueMappings:
https://cs.chromium.org/chromium/src/third_party/WebKit/Source/core/css/CSSPr...

See this CL for an example: https://codereview.chromium.org/2853433003

[nainar, 2017/05/18 01:58:35]

Yup took out the relevant two functions. 

-  kNone,
-  kHidden,
-  kInset,
-  kGroove,
-  kOutset,
-  kRidge,
-  kDotted,
-  kDashed,
-  kSolid,
-  kDouble
-};
-
 enum OutlineIsAuto { kOutlineIsAutoOff = 0, kOutlineIsAutoOn };
 
 enum EMarginCollapse {
   kMarginCollapseCollapse,
   kMarginCollapseSeparate,
   kMarginCollapseDiscard
 };
 
 // Random visual rendering model attributes. Not inherited.
 
@@ skipping 350 matching lines @@
 // fraction, which leaves 20 bits for the integer part, making 1048575
 // the largest number.
 
 static const int kBorderWidthFractionalBits = 6;
 static const int kBorderWidthDenominator = 1 << kBorderWidthFractionalBits;
 static const int kMaxForBorderWidth = ((1 << 26) - 1) / kBorderWidthDenominator;
 
 }  // namespace blink
 
 #endif  // ComputedStyleConstants_h