Implement DocumentTimeline constructor

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

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 32 matching lines @@
 #include "platform/bindings/ScriptWrappable.h"
 #include "platform/heap/Handle.h"
 #include "platform/wtf/RefPtr.h"
 #include "platform/wtf/Vector.h"
 
 namespace blink {
 
 class Animation;
 class AnimationEffectReadOnly;
 class Document;
+class DocumentTimelineOptions;
 
 // DocumentTimeline is constructed and owned by Document, and tied to its
 // lifecycle.
 class CORE_EXPORT DocumentTimeline : public AnimationTimeline {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   class PlatformTiming : public GarbageCollectedFinalized<PlatformTiming> {
    public:
     // Calls DocumentTimeline's wake() method after duration seconds.
     virtual void WakeAfter(double duration) = 0;
     virtual void ServiceOnNextFrame() = 0;
     virtual ~PlatformTiming() {}
     DEFINE_INLINE_VIRTUAL_TRACE() {}
   };
 
-  static DocumentTimeline* Create(Document*, PlatformTiming* = nullptr);
+  static DocumentTimeline* Create(Document*,
+                                  double origin_time = 0.0,

[alancutter (OOO until 2018), 2017/06/29 03:16:18]

Let's use origin_time_in_seconds here.

+                                  PlatformTiming* = nullptr);
+
+  // Web Animations API IDL constructor
+  static DocumentTimeline* Create(ExecutionContext*,
+                                  const DocumentTimelineOptions&);
 
   virtual ~DocumentTimeline() {}
 
   bool IsDocumentTimeline() const final { return true; }
 
   void ServiceAnimations(TimingUpdateReason);
   void ScheduleNextService();
 
   Animation* Play(AnimationEffectReadOnly*);
   HeapVector<Member<Animation>> getAnimations();
@@ skipping 25 matching lines @@
   CompositorAnimationTimeline* CompositorTimeline() const {
     return compositor_timeline_.get();
   }
 
   Document* GetDocument() { return document_.Get(); }
   void Wake();
   void ResetForTesting();
 
   DECLARE_VIRTUAL_TRACE();
 
- protected:
-  DocumentTimeline(Document*, PlatformTiming*);
+ private:
+  DocumentTimeline(Document*, double origin_time, PlatformTiming*);
 
- private:
   Member<Document> document_;
+  double origin_time_;
   double zero_time_;
   bool zero_time_initialized_;
   unsigned outdated_animation_count_;
   // Animations which will be updated on the next frame
   // i.e. current, in effect, or had timing changed
   HeapHashSet<Member<Animation>> animations_needing_update_;
   HeapHashSet<WeakMember<Animation>> animations_;
 
   double playback_rate_;
 
@@ skipping 33 matching lines @@
 
 DEFINE_TYPE_CASTS(DocumentTimeline,
                   AnimationTimeline,
                   timeline,
                   timeline->IsDocumentTimeline(),
                   timeline.IsDocumentTimeline());
 
 }  // namespace blink
 
 #endif