Move Priority enum/field to KeyframeEffectReadOnly

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

 // Copyright 2016 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.
 
 #ifndef KeyframeEffectReadOnly_h
 #define KeyframeEffectReadOnly_h
 
 #include "core/CoreExport.h"
 #include "core/animation/AnimationEffectReadOnly.h"
 #include "core/animation/EffectModel.h"
 
 namespace blink {
 
 class KeyframeEffectOptions;
 class DictionarySequenceOrDictionary;
 class Element;
 class ExceptionState;
 class ExecutionContext;
 class SampledEffect;
 
 // Represents the effect of an Animation on an Element's properties.
 // http://w3c.github.io/web-animations/#the-keyframeeffect-interfaces
 class CORE_EXPORT KeyframeEffectReadOnly : public AnimationEffectReadOnly {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
+  enum Priority { DefaultPriority, TransitionPriority };
+
   static KeyframeEffectReadOnly* create(
       ExecutionContext*,
       Element*,
       const DictionarySequenceOrDictionary& effectInput,
       double duration,
       ExceptionState&);
   static KeyframeEffectReadOnly* create(
       ExecutionContext*,
       Element*,
       const DictionarySequenceOrDictionary& effectInput,
       const KeyframeEffectOptions& timingInput,
       ExceptionState&);
   static KeyframeEffectReadOnly* create(
       ExecutionContext*,
       Element*,
       const DictionarySequenceOrDictionary& effectInput,
       ExceptionState&);
 
   ~KeyframeEffectReadOnly() override {}
 
+  Priority getPriority() const { return m_priority; }
+  void downgradeToNormal() { m_priority = DefaultPriority; }
+
   DECLARE_VIRTUAL_TRACE();
 
  protected:
-  KeyframeEffectReadOnly(Element*, EffectModel*, const Timing&, EventDelegate*);
+  KeyframeEffectReadOnly(Element*,
+                         EffectModel*,
+                         const Timing&,
+                         Priority,
+                         EventDelegate*);
 
   Member<Element> m_target;
   Member<EffectModel> m_model;
   Member<SampledEffect> m_sampledEffect;
+
+  Priority m_priority;
 };
 
 }  // namespace blink
 
 #endif  // KeyframeEffectReadOnly_h