Move fixed point constants from ComputedStyleConstants to BorderValue.

third_party/WebKit/Source/core/style/BorderValue.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 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 14 matching lines @@
 #ifndef BorderValue_h
 #define BorderValue_h
 
 #include "core/css/StyleColor.h"
 #include "core/style/ComputedStyleConstants.h"
 #include "platform/graphics/Color.h"
 #include "platform/wtf/Allocator.h"
 
 namespace blink {
 
+// 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;
+
 class BorderValue {
   DISALLOW_NEW();
   friend class ComputedStyle;
 
  public:
   BorderValue()
       : color_(0),
         color_is_current_color_(true),
         style_(static_cast<unsigned>(EBorderStyle::kNone)),
         is_auto_(kOutlineIsAutoOff) {
@@ skipping 82 matching lines @@
   unsigned width_ : 26;  // Fixed point width
   unsigned style_ : 4;   // EBorderStyle
 
   // This is only used by OutlineValue but moved here to keep the bits packed.
   unsigned is_auto_ : 1;  // OutlineIsAuto
 };
 
 }  // namespace blink
 
 #endif  // BorderValue_h