Web Animations: Extract an API for servicing animations

Source/core/rendering/RenderLayerCompositor.cpp

Index: Source/core/rendering/RenderLayerCompositor.cpp
diff --git a/Source/core/rendering/RenderLayerCompositor.cpp b/Source/core/rendering/RenderLayerCompositor.cpp
index a6cd806288b66e3ede0e92a9c7490989cfa85c7d..6d6a75fab0da49efb19b6844d5191b69525aad40 100644
--- a/Source/core/rendering/RenderLayerCompositor.cpp
+++ b/Source/core/rendering/RenderLayerCompositor.cpp
@@ -31,6 +31,7 @@
 #include "HTMLNames.h"
 #include "RuntimeEnabledFeatures.h"
 #include "core/animation/ActiveAnimations.h"
+#include "core/animation/DocumentAnimations.h"
 #include "core/dom/FullscreenElementStack.h"
 #include "core/dom/NodeList.h"
 #include "core/html/HTMLCanvasElement.h"
@@ -476,6 +477,9 @@ void RenderLayerCompositor::updateCompositingLayers(CompositingUpdateType update
     if (!hasAcceleratedCompositing())
         enableCompositingMode(false);
 
+    if (isMainFrame())
+        DocumentAnimations::serviceAfterCompositingUpdate(*m_renderView->frameView());
+
     // The scrolling coordinator may realize that it needs updating while compositing was being updated in this function.
     needsToUpdateScrollingCoordinator |= scrollingCoordinator() ? scrollingCoordinator()->needsToUpdateAfterCompositingChange() : false;
     if (needsToUpdateScrollingCoordinator && isMainFrame() && scrollingCoordinator() && inCompositingMode())