Initial implementation of WorkletAnimation

third_party/WebKit/Source/core/dom/Document.h

Index: third_party/WebKit/Source/core/dom/Document.h
diff --git a/third_party/WebKit/Source/core/dom/Document.h b/third_party/WebKit/Source/core/dom/Document.h
index dfa3fd304063c35f3a97d4f9fefdec53d2641bd0..db449bb98fb64dbae4fa41cd442c52d5d5cfbf13 100644
--- a/third_party/WebKit/Source/core/dom/Document.h
+++ b/third_party/WebKit/Source/core/dom/Document.h
@@ -34,6 +34,7 @@
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "core/CoreExport.h"
+#include "core/animation/WorkletAnimationController.h"
 #include "core/dom/ContainerNode.h"
 #include "core/dom/DocumentEncodingData.h"
 #include "core/dom/DocumentInit.h"
@@ -1200,6 +1201,9 @@ class CORE_EXPORT Document : public ContainerNode,
   CompositorPendingAnimations& GetCompositorPendingAnimations() {
     return *compositor_pending_animations_;
   }
+  WorkletAnimationController& GetWorkletAnimationController() {
+    return *worklet_animation_controller_;
+  }
 
   void AddToTopLayer(Element*, const Element* before = nullptr);
   void RemoveFromTopLayer(Element*);
@@ -1655,6 +1659,7 @@ class CORE_EXPORT Document : public ContainerNode,
 
   Member<DocumentTimeline> timeline_;
   Member<CompositorPendingAnimations> compositor_pending_animations_;
+  Member<WorkletAnimationController> worklet_animation_controller_;
 
   Member<Document> template_document_;
   Member<Document> template_document_host_;