Use Length for the stroke-width property in SVGLayoutStyle

Source/core/animation/css/CSSPropertyEquality.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/animation/css/CSSPropertyEquality.h"
 
 #include "core/animation/css/CSSAnimations.h"
 #include "core/layout/style/DataEquivalency.h"
 #include "core/layout/style/LayoutStyle.h"
@@ skipping 211 matching lines @@
     }
     case CSSPropertyStrokeDasharray:
         return a.strokeDashArray() == b.strokeDashArray();
     case CSSPropertyStrokeDashoffset:
         return a.strokeDashOffset() == b.strokeDashOffset();
     case CSSPropertyStrokeMiterlimit:
         return a.strokeMiterLimit() == b.strokeMiterLimit();
     case CSSPropertyStrokeOpacity:
         return a.strokeOpacity() == b.strokeOpacity();
     case CSSPropertyStrokeWidth:
-        return dataEquivalent(a.strokeWidth(), b.strokeWidth());
+        return a.strokeWidth() == b.strokeWidth();
     case CSSPropertyTextDecorationColor:
         return a.textDecorationColor() == b.textDecorationColor()
             && a.visitedLinkTextDecorationColor() == b.visitedLinkTextDecorationColor();
     case CSSPropertyTextIndent:
         return a.textIndent() == b.textIndent();
     case CSSPropertyTextShadow:
         return dataEquivalent(a.textShadow(), b.textShadow());
     case CSSPropertyTop:
         return a.top() == b.top();
     case CSSPropertyVerticalAlign:
@@ skipping 67 matching lines @@
         return a.svgStyle().ry() == b.svgStyle().ry();
     case CSSPropertyZIndex:
         return a.zIndex() == b.zIndex();
     default:
         ASSERT_NOT_REACHED();
         return true;
     }
 }
 
 }