[wip] interpolable value refactor. NOT FOR LANDING.

Source/core/animation/AnimationStack.cpp

Index: Source/core/animation/AnimationStack.cpp
diff --git a/Source/core/animation/AnimationStack.cpp b/Source/core/animation/AnimationStack.cpp
index 601e7e598e4d4ccb17ba4d8e76841adbd84d1cce..a7fdd5634a25f41b1a3268adb83b13756c905ecf 100644
--- a/Source/core/animation/AnimationStack.cpp
+++ b/Source/core/animation/AnimationStack.cpp
@@ -30,6 +30,7 @@
 
 #include "config.h"
 #include "core/animation/AnimationStack.h"
+#include "core/animation/Interpolation.h"
 
 #include "core/animation/css/CSSAnimations.h"
 
@@ -37,12 +38,15 @@ namespace WebCore {
 
 namespace {
 
-void copyToCompositableValueMap(const AnimationEffect::CompositableValueList* source, AnimationEffect::CompositableValueMap& target)
+void copyToCompositableValueMap(const Vector<RefPtr<WebCore::Interpolation> > * source, HashMap<CSSPropertyID, RefPtr<WebCore::Interpolation> >& target)
 {
     if (!source)
         return;
-    for (AnimationEffect::CompositableValueList::const_iterator iter = source->begin(); iter != source->end(); ++iter)
-        target.set(iter->first, iter->second);
+    for (Vector<RefPtr<WebCore::Interpolation> >::const_iterator iter = source->begin(); iter != source->end(); ++iter) {
+        RefPtr<WebCore::Interpolation> interpolation = *iter;
+        WebCore::StyleInterpolation *styleInterpolation = static_cast<WebCore::StyleInterpolation *>(interpolation.get());
+        target.set(styleInterpolation->id(), styleInterpolation);
+    }
 }
 
 } // namespace
@@ -65,9 +69,9 @@ bool AnimationStack::hasActiveAnimationsOnCompositor(CSSPropertyID property) con
     return false;
 }
 
-AnimationEffect::CompositableValueMap AnimationStack::compositableValues(const AnimationStack* animationStack, const Vector<InertAnimation*>* newAnimations, const HashSet<const Player*>* cancelledPlayers, Animation::Priority priority)
+HashMap<CSSPropertyID, RefPtr<Interpolation> > AnimationStack::compositableValues(const AnimationStack* animationStack, const Vector<InertAnimation*>* newAnimations, const HashSet<const Player*>* cancelledPlayers, Animation::Priority priority)
 {
-    AnimationEffect::CompositableValueMap result;
+    HashMap<CSSPropertyID, RefPtr<Interpolation> > result;
 
     if (animationStack) {
         const Vector<Animation*>& animations = animationStack->m_activeAnimations;