Move border-*-width out of BorderValue and store on SurroundData in ComputedStyle instead

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 481 matching lines @@
 };
 
 enum ScrollSnapType {
   kScrollSnapTypeNone,
   kScrollSnapTypeMandatory,
   kScrollSnapTypeProximity
 };
 
 enum AutoRepeatType { kNoAutoRepeat, kAutoFill, kAutoFit };
 
+// In order to conserve memory, the border width uses fixed point,
+// which can be bitpacked.  This fixed point implementation is
+// essentially the same as in LayoutUnit.  Six bits are used for the
+// 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