SVG Web Animations: Add SVGInterpolationType pipeline

third_party/WebKit/Source/core/svg/properties/SVGAnimatedProperty.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.
 G*     * Redistributions in binary form must reproduce the above
@@ skipping 35 matching lines @@
 
 class SVGElement;
 
 class SVGAnimatedPropertyBase : public RefCountedWillBeGarbageCollectedFinalized<SVGAnimatedPropertyBase>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO_NOT_REACHED();
     WTF_MAKE_NONCOPYABLE(SVGAnimatedPropertyBase);
 public:
     virtual ~SVGAnimatedPropertyBase();
 
     virtual SVGPropertyBase* currentValueBase() = 0;
+    virtual const SVGPropertyBase* currentValueBase() const = 0;
     virtual bool isAnimating() const = 0;
 
     virtual PassRefPtrWillBeRawPtr<SVGPropertyBase> createAnimatedValue() = 0;
     virtual void setAnimatedValue(PassRefPtrWillBeRawPtr<SVGPropertyBase>) = 0;
     virtual void animationEnded();
 
     virtual void setBaseValueAsString(const String& value, SVGParsingError& parseError) = 0;
     virtual bool needsSynchronizeAttribute() = 0;
     virtual void synchronizeAttribute();
 
@@ skipping 59 matching lines @@
     const Property* currentValue() const
     {
         return const_cast<SVGAnimatedPropertyCommon*>(this)->currentValue();
     }
 
     SVGPropertyBase* currentValueBase() override
     {
         return currentValue();
     }
 
+    const SVGPropertyBase* currentValueBase() const override
+    {
+        return currentValue();
+    }
+
     bool isAnimating() const override
     {
         return m_currentValue;
     }
 
     void setBaseValueAsString(const String& value, SVGParsingError& parseError) override
     {
         TrackExceptionState es;
 
         m_baseValue->setValueAsString(value, es);
@@ skipping 177 matching lines @@
     // When animated:
     //     m_animValTearOff targets m_currentValue.
     //     m_baseValTearOff targets m_baseValue.
     RefPtrWillBeMember<TearOffType> m_baseValTearOff;
     RefPtrWillBeMember<TearOffType> m_animValTearOff;
 };
 
 } // namespace blink
 
 #endif // SVGAnimatedProperty_h