Introduce animation frame tasks

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

Index: third_party/WebKit/Source/core/dom/ScriptedAnimationController.h
diff --git a/third_party/WebKit/Source/core/dom/ScriptedAnimationController.h b/third_party/WebKit/Source/core/dom/ScriptedAnimationController.h
index 1962092af2bb9b229ba880cf37b697916b47531f..8ce30ea1791401f327847dd34577253766ba3bca 100644
--- a/third_party/WebKit/Source/core/dom/ScriptedAnimationController.h
+++ b/third_party/WebKit/Source/core/dom/ScriptedAnimationController.h
@@ -43,7 +43,7 @@ class FrameRequestCallback;
 class MediaQueryListListener;
 
 class CORE_EXPORT ScriptedAnimationController
-    : public GarbageCollected<ScriptedAnimationController> {
+    : public GarbageCollectedFinalized<ScriptedAnimationController> {
  public:
   static ScriptedAnimationController* create(Document* document) {
     return new ScriptedAnimationController(document);
@@ -58,6 +58,7 @@ class CORE_EXPORT ScriptedAnimationController
   void cancelCallback(CallbackId);
   void serviceScriptedAnimations(double monotonicTimeNow);
 
+  void enqueueTask(std::unique_ptr<WTF::Closure>);

[Sami, 2016/12/06 14:32:50]

It might be nice to have a short comment here as a reminder of what these tasks
are and when they run.

[foolip, 2016/12/06 16:32:33]

I added some documentation, please shout if it's not good :)

   void enqueueEvent(Event*);
   void enqueuePerFrameEvent(Event*);
   void enqueueMediaQueryChangeListeners(
@@ -73,6 +74,7 @@ class CORE_EXPORT ScriptedAnimationController
 
   void scheduleAnimationIfNeeded();
 
+  void runTasks();
   void dispatchEvents(
       const AtomicString& eventInterfaceFilter = AtomicString());
   void executeCallbacks(double monotonicTimeNow);
@@ -83,6 +85,7 @@ class CORE_EXPORT ScriptedAnimationController
   Member<Document> m_document;
   FrameRequestCallbackCollection m_callbackCollection;
   int m_suspendCount;
+  Vector<std::unique_ptr<WTF::Closure>> m_taskQueue;
   HeapVector<Member<Event>> m_eventQueue;
   HeapListHashSet<std::pair<Member<const EventTarget>, const StringImpl*>>
       m_perFrameEvents;