Add additive animation support for CSS property motion-rotation

third_party/WebKit/Source/core/animation/StringKeyframe.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 "core/animation/StringKeyframe.h"
 
 #include "core/StylePropertyShorthand.h"
 #include "core/animation/ConstantStyleInterpolation.h"
 #include "core/animation/DeferredLegacyStyleInterpolation.h"
 #include "core/animation/DoubleStyleInterpolation.h"
@@ skipping 157 matching lines @@
         // FIXME: Handle keywords e.g. 'smaller', 'larger'.
         if (property == CSSPropertyFontSize)
             return createLegacyStyleInterpolation(property, end, element, baseStyle);
 
         // FIXME: Handle keywords e.g. 'baseline', 'sub'.
         if (property == CSSPropertyBaselineShift)
             return createLegacyStyleInterpolation(property, end, element, baseStyle);
 
         break;
 
-    case CSSPropertyMotionRotation: {
-        RefPtr<Interpolation> interpolation = DoubleStyleInterpolation::maybeCreateFromMotionRotation(*fromCSSValue, *toCSSValue, property);
-        if (interpolation)
-            return interpolation.release();
-        break;
-    }
-
     case CSSPropertyBorderBottomLeftRadius:
     case CSSPropertyBorderBottomRightRadius:
     case CSSPropertyBorderTopLeftRadius:
     case CSSPropertyBorderTopRightRadius:
         if (LengthPairStyleInterpolation::canCreateFrom(*fromCSSValue) && LengthPairStyleInterpolation::canCreateFrom(*toCSSValue))
             return LengthPairStyleInterpolation::create(*fromCSSValue, *toCSSValue, property, RangeNonNegative);
         break;
 
     case CSSPropertyPerspectiveOrigin:
     case CSSPropertyTransformOrigin: {
@@ skipping 100 matching lines @@
 }
 
 PassRefPtr<Interpolation> SVGPropertySpecificKeyframe::maybeCreateInterpolation(PropertyHandle propertyHandle, Keyframe::PropertySpecificKeyframe& end, Element*, const ComputedStyle*) const
 {
     const InterpolationTypes* applicableTypes = PropertyInterpolationTypesMapping::get(propertyHandle);
     ASSERT(applicableTypes);
     return InvalidatableInterpolation::create(propertyHandle, *applicableTypes, const_cast<SVGPropertySpecificKeyframe*>(this), &end);
 }
 
 } // namespace blink