Make InterpolationEnvironment virutal

third_party/WebKit/Source/core/svg/SVGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann
  * <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 13 matching lines @@
 
 #include "core/svg/SVGElement.h"
 
 #include "bindings/core/v8/ScriptEventListener.h"
 #include "core/HTMLNames.h"
 #include "core/SVGNames.h"
 #include "core/XMLNames.h"
 #include "core/animation/DocumentAnimations.h"
 #include "core/animation/EffectStack.h"
 #include "core/animation/ElementAnimations.h"
-#include "core/animation/InterpolationEnvironment.h"
 #include "core/animation/InvalidatableInterpolation.h"
+#include "core/animation/SVGInterpolationEnvironment.h"
 #include "core/animation/SVGInterpolationTypesMap.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/dom/Document.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/events/Event.h"
 #include "core/frame/Settings.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/html/HTMLElement.h"
 #include "core/inspector/ConsoleMessage.h"
@@ skipping 161 matching lines @@
 }
 
 void SVGElement::ApplyActiveWebAnimations() {
   ActiveInterpolationsMap active_interpolations_map =
       EffectStack::ActiveInterpolations(
           &GetElementAnimations()->GetEffectStack(), nullptr, nullptr,
           KeyframeEffectReadOnly::kDefaultPriority, IsSVGAttributeHandle);
   for (auto& entry : active_interpolations_map) {
     const QualifiedName& attribute = entry.key.SvgAttribute();
     SVGInterpolationTypesMap map;
-    InterpolationEnvironment environment(
+    SVGInterpolationEnvironment environment(
         map, *this, PropertyFromAttribute(attribute)->BaseValueBase());
     InvalidatableInterpolation::ApplyStack(entry.value, environment);
   }
   if (!HasSVGRareData())
     return;
   SvgRareData()->SetWebAnimatedAttributesDirty(false);
 }
 
 static inline void NotifyAnimValChanged(SVGElement* target_element,
                                         const QualifiedName& attribute_name) {
@@ skipping 1122 matching lines @@
   visitor->Trace(class_name_);
   Element::Trace(visitor);
 }
 
 const AtomicString& SVGElement::EventParameterName() {
   DEFINE_STATIC_LOCAL(const AtomicString, evt_string, ("evt"));
   return evt_string;
 }
 
 }  // namespace blink