Web Animations CSS: Start running animations on the compositor

Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 2032 matching lines @@
     m_delayedLayout = false;
 }
 
 void FrameView::serviceScriptedAnimations(double monotonicAnimationStartTime)
 {
     for (RefPtr<Frame> frame = m_frame; frame; frame = frame->tree().traverseNext()) {
         frame->view()->serviceScrollAnimations();
         if (!RuntimeEnabledFeatures::webAnimationsCSSEnabled())
             frame->animation().serviceAnimations();
 
+        // FIXME: Animation events for newly started CSS Animations should be fired
+        // asynchronously after the style recalc that triggered them. For now we fire
+        // them here (a frame late) so that they at least apply against the correct
+        // animation state.
+        frame->document()->dispatchAnimationEvents();
         frame->document()->serviceAnimations(monotonicAnimationStartTime);
         frame->document()->dispatchAnimationEvents();
     }
 
     Vector<RefPtr<Document> > documents;
     for (Frame* frame = m_frame.get(); frame; frame = frame->tree().traverseNext())
         documents.append(frame->document());
 
     for (size_t i = 0; i < documents.size(); ++i)
         documents[i]->serviceScriptedAnimations(monotonicAnimationStartTime);
@@ skipping 1448 matching lines @@
 void FrameView::willRemoveScrollbar(Scrollbar* scrollbar, ScrollbarOrientation orientation)
 {
     ScrollableArea::willRemoveScrollbar(scrollbar, orientation);
     if (AXObjectCache* cache = axObjectCache()) {
         cache->remove(scrollbar);
         cache->handleScrollbarUpdate(this);
     }
 }
 
 } // namespace WebCore