Add a way to schedule generic per-frame events through Document.

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index ac725314e92702dd4df68f846c41768051a8ec88..974ae87f5d86250f0762a88c06f11d9bee35e597 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -3874,6 +3874,11 @@ void Document::enqueueAnimationFrameEvent(PassRefPtrWillBeRawPtr<Event> event)
     ensureScriptedAnimationController().enqueueEvent(event);
 }
 
+void Document::enqueueUniqueAnimationFrameEvent(PassRefPtrWillBeRawPtr<Event> event)
+{
+    ensureScriptedAnimationController().enqueuePerFrameEvent(event);
+}
+
 void Document::enqueueScrollEventForNode(Node* target)
 {
     // Per the W3C CSSOM View Module only scroll events fired at the document should bubble.
@@ -3894,7 +3899,6 @@ void Document::enqueueMediaQueryChangeListeners(WillBeHeapVector<RefPtrWillBeMem
     ensureScriptedAnimationController().enqueueMediaQueryChangeListeners(listeners);
 }
 
-
 Document::EventFactorySet& Document::eventFactories()
 {
     DEFINE_STATIC_LOCAL(EventFactorySet, s_eventFactory, ());