Bug 981508 - Fix comment in nsDisplayTransform::ShouldPrerenderTransformedContent; r=roc

layout/base/nsDisplayList.cpp

@@ -4632,7 +4632,7 @@ nsDisplayTransform::ShouldPrerenderTransformedContent(nsDisplayListBuilder* aBui
   // Elements whose transform has been modified recently, or which
   // have a compositor-animated transform, can be prerendered. An element
   // might have only just had its transform animated in which case
-  // nsChangeHint_UpdateTransformLayer will not be present yet.
+  // the ActiveLayerManager may not have been notified yet.
   if (!ActiveLayerTracker::IsStyleAnimated(aFrame, eCSSProperty_transform) &&
       (!aFrame->GetContent() ||
        !nsLayoutUtils::HasAnimationsForCompositor(aFrame->GetContent(),