Initial implementation of WorkletAnimation

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

+// Copyright 2017 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 WorkletAnimationController_h
+#define WorkletAnimationController_h
+
+#include "core/CoreExport.h"
+#include "platform/heap/GarbageCollected.h"
+#include "platform/heap/HeapAllocator.h"
+#include "platform/heap/Visitor.h"
+
+namespace blink {
+
+class WorkletAnimationBase;
+
+class CORE_EXPORT WorkletAnimationController
+    : public GarbageCollectedFinalized<WorkletAnimationController> {
+ public:
+  WorkletAnimationController();
+  virtual ~WorkletAnimationController();
+
+  void RegisterAnimation(WorkletAnimationBase*);
+  void DeregisterAnimation(WorkletAnimationBase*);

[majidvp, 2017/06/06 16:04:27]

nit: AnimationTimeline uses attach/detach terminology. Perhaps we should match
that.

[smcgruer, 2017/06/07 18:23:24]

Hrm, but CompositorPendingAnimations uses 'Add'. Such conflict! Changed to
attach, and dropped the detach method since it isn't called atm. We definitely
need to work out lifecycle for WorkletAnimation.

+
+  void Update();
+
+  DECLARE_TRACE();
+
+ private:
+  HeapHashSet<Member<WorkletAnimationBase>> animations_;
+};
+
+}  // namespace blink
+
+#endif  // WorkletAnimationController_h