Defer updateCompositingRequirementsState until the compositing update

Source/core/frame/FrameView.cpp

Index: Source/core/frame/FrameView.cpp
diff --git a/Source/core/frame/FrameView.cpp b/Source/core/frame/FrameView.cpp
index e4b516cfe5339a4d857ed7f6b7ca924a3046f6ec..ea9a4d9aea8440b6faab8a993fa02c160c270201 100644
--- a/Source/core/frame/FrameView.cpp
+++ b/Source/core/frame/FrameView.cpp
@@ -623,13 +623,6 @@ void FrameView::updateCompositingLayersAfterStyleChange()
 
     // This call will make sure the cached hasAcceleratedCompositing is updated from the pref
     renderView->compositor()->cacheAcceleratedCompositingFlags();
-
-    // Sometimes we will change a property (for example, z-index) that will not
-    // cause a layout, but will require us to update compositing state. We only
-    // need to do this if a layout is not already scheduled.
-    if (!needsLayout())
-        renderView->compositor()->updateCompositingRequirementsState();
-
     renderView->compositor()->setNeedsCompositingUpdate(CompositingUpdateAfterStyleChange);
 }
 
@@ -646,7 +639,6 @@ void FrameView::updateCompositingLayersAfterLayout()
 
     // This call will make sure the cached hasAcceleratedCompositing is updated from the pref
     renderView->compositor()->cacheAcceleratedCompositingFlags();
-    renderView->compositor()->updateCompositingRequirementsState();
     renderView->compositor()->setNeedsCompositingUpdate(CompositingUpdateAfterLayout);
 }