Web Animations: Extract an API for servicing animations

Source/core/animation/ActiveAnimations.cpp

Index: Source/core/animation/ActiveAnimations.cpp
diff --git a/Source/core/animation/ActiveAnimations.cpp b/Source/core/animation/ActiveAnimations.cpp
index 40294fb4643e6d09f4a42b849234f90563e11701..037e3df256d1d59999729c1eee2b80096137a766 100644
--- a/Source/core/animation/ActiveAnimations.cpp
+++ b/Source/core/animation/ActiveAnimations.cpp
@@ -46,10 +46,10 @@ bool shouldCompositeForActiveAnimations(const RenderObject& renderer, bool rende
     const Element* element = toElement(renderer.node());
     if (const ActiveAnimations* activeAnimations = element->activeAnimations()) {
         // FIXME: remove compositing mode check once compositing is forced on all platforms
-        bool shouldCompositeForActiveAnimation = (activeAnimations->hasActiveAnimations(CSSPropertyOpacity) && renderViewInCompositingMode)
+        if ((renderViewInCompositingMode && activeAnimations->hasActiveAnimations(CSSPropertyOpacity))
             || activeAnimations->hasActiveAnimations(CSSPropertyWebkitTransform)
-            || activeAnimations->hasActiveAnimations(CSSPropertyWebkitFilter);
-        return shouldCompositeForActiveAnimation || activeAnimations->cssAnimations().shouldCompositeForPendingAnimations(renderViewInCompositingMode);

[Steve Block, 2013/11/20 00:36:16]

I don't understand why we no longer check whether the pending animations should
be composited?

[dstockwell, 2013/11/20 00:49:16]

The animations in CSSPendingAnimations are now active but frozen at time 0, they
just don't have a start time.

+            || activeAnimations->hasActiveAnimations(CSSPropertyWebkitFilter))
+            return true;
     }
 
     return false;