Introduce animation frame tasks

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

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index c34dd18006fa26ef70406f276544d7574a00f7af..fb81da1e1e6d7eecbc64350399f5a54212d3515d 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -4276,6 +4276,10 @@ EventQueue* Document::getEventQueue() const {
   return m_domWindow->getEventQueue();
 }
 
+void Document::enqueueAnimationFrameTask(std::unique_ptr<WTF::Closure> task) {
+  ensureScriptedAnimationController().enqueueTask(std::move(task));
+}
+
 void Document::enqueueAnimationFrameEvent(Event* event) {
   ensureScriptedAnimationController().enqueueEvent(event);
 }