Use Length for the stroke-width property in SVGLayoutStyle

Source/core/animation/animatable/AnimatableValueTestHelper.h

 /*
  * Copyright (c) 2013, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 23 matching lines @@
  */
 
 #ifndef AnimatableValueTestHelper_h
 #define AnimatableValueTestHelper_h
 
 #include "core/animation/animatable/AnimatableClipPathOperation.h"
 #include "core/animation/animatable/AnimatableColor.h"
 #include "core/animation/animatable/AnimatableImage.h"
 #include "core/animation/animatable/AnimatableNeutral.h"
 #include "core/animation/animatable/AnimatableRepeatable.h"
-#include "core/animation/animatable/AnimatableSVGLength.h"
 #include "core/animation/animatable/AnimatableSVGPaint.h"
 #include "core/animation/animatable/AnimatableShapeValue.h"
 #include "core/animation/animatable/AnimatableStrokeDasharrayList.h"
 #include "core/animation/animatable/AnimatableTransform.h"
 #include "core/animation/animatable/AnimatableUnknown.h"
 #include "core/animation/animatable/AnimatableValue.h"
 #include "core/animation/animatable/AnimatableVisibility.h"
 
 #include "core/css/CSSValueTestHelper.h"
 
 // FIXME: Move to something like core/wtf/WTFTestHelpers.h
 // Compares the targets of two RefPtrs for equality.
 // (Objects still need an operator== defined for this to work).
 #define EXPECT_REFV_EQ(a, b) EXPECT_EQ(*(a.get()), *(b.get()))
 
 namespace blink {
 
 bool operator==(const AnimatableValue&, const AnimatableValue&);
 
 void PrintTo(const AnimatableClipPathOperation&, ::std::ostream*);
 void PrintTo(const AnimatableColor&, ::std::ostream*);
 void PrintTo(const AnimatableImage&, ::std::ostream*);
 void PrintTo(const AnimatableNeutral&, ::std::ostream*);
 void PrintTo(const AnimatableRepeatable&, ::std::ostream*);
-void PrintTo(const AnimatableSVGLength&, ::std::ostream*);
 void PrintTo(const AnimatableShapeValue&, ::std::ostream*);
 void PrintTo(const AnimatableStrokeDasharrayList&, ::std::ostream*);
 void PrintTo(const AnimatableTransform&, ::std::ostream*);
 void PrintTo(const AnimatableUnknown&, ::std::ostream*);
 void PrintTo(const AnimatableValue&, ::std::ostream*);
 void PrintTo(const AnimatableVisibility&, ::std::ostream*);
 
 } // namespace blink
 
 #endif