Devtools Animations: Support multiple frames in the animation timeline

Source/core/inspector/InspectorAnimationAgent.h

 // Copyright 2014 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 InspectorAnimationAgent_h
 #define InspectorAnimationAgent_h
 
 #include "core/InspectorFrontend.h"
 #include "core/css/CSSKeyframesRule.h"
 #include "core/inspector/InspectorBaseAgent.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class AnimationNode;
 class AnimationPlayer;
+class AnimationTimeline;
 class Element;
 class InspectorDOMAgent;
 class InspectorPageAgent;
 class TimingFunction;
 
 class InspectorAnimationAgent final : public InspectorBaseAgent<InspectorAnimationAgent, InspectorFrontend::Animation>, public InspectorBackendDispatcher::AnimationCommandHandler {
     WTF_MAKE_NONCOPYABLE(InspectorAnimationAgent);
 public:
     static PassOwnPtrWillBeRawPtr<InspectorAnimationAgent> create(InspectorPageAgent* pageAgent, InspectorDOMAgent* domAgent)
     {
         return adoptPtrWillBeNoop(new InspectorAnimationAgent(pageAgent, domAgent));
     }
 
     // Base agent methods.
     void restore() override;
     void disable(ErrorString*) override;
     void didCommitLoadForLocalFrame(LocalFrame*) override;
 
     // Protocol method implementations
     virtual void getAnimationPlayersForNode(ErrorString*, int nodeId, bool includeSubtreeAnimations, RefPtr<TypeBuilder::Array<TypeBuilder::Animation::AnimationPlayer> >& animationPlayersArray) override;
     virtual void getPlaybackRate(ErrorString*, double* playbackRate) override;
     virtual void setPlaybackRate(ErrorString*, double playbackRate) override;
     virtual void setCurrentTime(ErrorString*, double currentTime) override;
     virtual void setTiming(ErrorString*, const String& playerId, double duration, double delay) override;
 
     // API for InspectorInstrumentation
     void didCreateAnimationPlayer(AnimationPlayer*);
     void didCancelAnimationPlayer(AnimationPlayer*);
+    void documentAttachedToFrame(LocalFrame*);
 
     // API for InspectorFrontend
     virtual void enable(ErrorString*) override;
 
     // Methods for other agents to use.
     AnimationPlayer* assertAnimationPlayer(ErrorString*, const String& id);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     InspectorAnimationAgent(InspectorPageAgent*, InspectorDOMAgent*);
 
     typedef TypeBuilder::Animation::AnimationPlayer::Type::Enum AnimationType;
 
     PassRefPtr<TypeBuilder::Animation::AnimationPlayer> buildObjectForAnimationPlayer(AnimationPlayer&);
     PassRefPtr<TypeBuilder::Animation::AnimationPlayer> buildObjectForAnimationPlayer(AnimationPlayer&, AnimationType, PassRefPtr<TypeBuilder::Animation::KeyframesRule> keyframeRule = nullptr);
     PassRefPtr<TypeBuilder::Array<TypeBuilder::Animation::AnimationPlayer> > buildArrayForAnimationPlayers(Element&, const WillBeHeapVector<RefPtrWillBeMember<AnimationPlayer> >);
+    double normalizedStartTime(AnimationPlayer&);
+    AnimationTimeline& referenceTimeline();
 
     RawPtrWillBeMember<InspectorPageAgent> m_pageAgent;
     RawPtrWillBeMember<InspectorDOMAgent> m_domAgent;
     WillBeHeapHashMap<String, RefPtrWillBeMember<AnimationPlayer>> m_idToAnimationPlayer;
     WillBeHeapHashMap<String, AnimationType> m_idToAnimationType;
 };
 
 }
 
 #endif // InspectorAnimationAgent_h