Introduce KeyframeEffectReadOnly interface

third_party/WebKit/Source/core/animation/KeyframeEffect.h

Index: third_party/WebKit/Source/core/animation/KeyframeEffect.h
diff --git a/third_party/WebKit/Source/core/animation/KeyframeEffect.h b/third_party/WebKit/Source/core/animation/KeyframeEffect.h
index 5c5471ede36043c4774c0261a58d24fb14bd1a20..c844a36610d2557ad87c09cd776ebe5e7afdfd37 100644
--- a/third_party/WebKit/Source/core/animation/KeyframeEffect.h
+++ b/third_party/WebKit/Source/core/animation/KeyframeEffect.h
@@ -32,9 +32,9 @@
 #define KeyframeEffect_h
 
 #include "core/CoreExport.h"
-#include "core/animation/AnimationEffectReadOnly.h"
 #include "core/animation/EffectInput.h"
 #include "core/animation/EffectModel.h"
+#include "core/animation/KeyframeEffectReadOnly.h"
 #include "core/animation/TimingInput.h"
 #include "platform/heap/Handle.h"
 #include "wtf/RefPtr.h"
@@ -50,12 +50,10 @@ class SampledEffect;
 
 // Represents the effect of an Animation on an Element's properties.
 // http://w3c.github.io/web-animations/#keyframe-effect
-class CORE_EXPORT KeyframeEffect final : public AnimationEffectReadOnly {
+class CORE_EXPORT KeyframeEffect final : public KeyframeEffectReadOnly {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    enum Priority { DefaultPriority, TransitionPriority };
-
-    static KeyframeEffect* create(Element*, EffectModel*, const Timing&, Priority = DefaultPriority, EventDelegate* = nullptr);
+    static KeyframeEffect* create(Element*, EffectModel*, const Timing&, KeyframeEffectReadOnly::Priority = KeyframeEffectReadOnly::DefaultPriority, EventDelegate* = nullptr);
     // Web Animations API Bindings constructors.
     static KeyframeEffect* create(ExecutionContext*, Element*, const DictionarySequenceOrDictionary& effectInput, double duration, ExceptionState&);
     static KeyframeEffect* create(ExecutionContext*, Element*, const DictionarySequenceOrDictionary& effectInput, const KeyframeEffectOptions& timingInput, ExceptionState&);
@@ -69,7 +67,7 @@ public:
     const EffectModel* model() const { return m_model.get(); }
     EffectModel* model() { return m_model.get(); }
     void setModel(EffectModel* model) { m_model = model; }
-    Priority getPriority() const { return m_priority; }
+    KeyframeEffectReadOnly::Priority getPriority() const { return m_priority; }
     Element* target() const { return m_target; }
 
     void notifySampledEffectRemovedFromAnimationStack();
@@ -90,7 +88,7 @@ public:
 
     DECLARE_VIRTUAL_TRACE();
 
-    void downgradeToNormal() { m_priority = DefaultPriority; }
+    void downgradeToNormal() { m_priority = KeyframeEffectReadOnly::DefaultPriority; }
 
 protected:
     void applyEffects();
@@ -104,13 +102,7 @@ protected:
     bool hasMultipleTransformProperties() const;
 
 private:
-    KeyframeEffect(Element*, EffectModel*, const Timing&, Priority, EventDelegate*);
-
-    Member<Element> m_target;
-    Member<EffectModel> m_model;
-    Member<SampledEffect> m_sampledEffect;
-
-    Priority m_priority;
+    KeyframeEffect(Element*, EffectModel*, const Timing&, KeyframeEffectReadOnly::Priority, EventDelegate*);
 
     Vector<int> m_compositorAnimationIds;