Animation: Fix loss of type information when interpolating value of 0

Source/core/animation/DeferredLegacyStyleInterpolation.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/DeferredLegacyStyleInterpolation.h"
 
 #include "core/animation/LegacyStyleInterpolation.h"
 #include "core/css/CSSImageValue.h"
 #include "core/css/CSSPrimitiveValue.h"
@@ skipping 40 matching lines @@
 {
     // FIXME: consider other types.
     if (primitiveValue.isNumber() || primitiveValue.isPercentage() || primitiveValue.isAngle() || primitiveValue.isRGBColor() || primitiveValue.isURI())
         return false;
 
     if (primitiveValue.isLength())
         return primitiveValue.isFontRelativeLength() || primitiveValue.isViewportPercentageLength();
 
     if (primitiveValue.isCalculated()) {
         CSSLengthArray lengthArray(CSSPrimitiveValue::LengthUnitTypeCount);
-        primitiveValue.accumulateLengthArray(lengthArray);
+        CSSLengthTypeArray lengthTypeArray(CSSPrimitiveValue::LengthUnitTypeCount);
+        primitiveValue.accumulateLengthArray(lengthArray, lengthTypeArray);

[samli, 2014/12/22 03:38:04]

lengthTypeArray not used here

         return lengthArray[CSSPrimitiveValue::UnitTypeFontSize] != 0
             || lengthArray[CSSPrimitiveValue::UnitTypeFontXSize] != 0
             || lengthArray[CSSPrimitiveValue::UnitTypeRootFontSize] != 0
             || lengthArray[CSSPrimitiveValue::UnitTypeZeroCharacterWidth] != 0
             || lengthArray[CSSPrimitiveValue::UnitTypeViewportWidth] != 0
             || lengthArray[CSSPrimitiveValue::UnitTypeViewportHeight] != 0
             || lengthArray[CSSPrimitiveValue::UnitTypeViewportMin] != 0
             || lengthArray[CSSPrimitiveValue::UnitTypeViewportMax] != 0;
     }
 
@@ skipping 63 matching lines @@
 }
 
 void DeferredLegacyStyleInterpolation::trace(Visitor* visitor)
 {
     visitor->trace(m_startCSSValue);
     visitor->trace(m_endCSSValue);
     StyleInterpolation::trace(visitor);
 }
 
 }