Remove assumption that null containerForRepaint assumes RenderView

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 ff0d58a858938cbb85480964af0cf0e5fca135c7..f5b63c7b0eff448a5bf960c13df25ed4b4520983 100644
--- a/Source/core/frame/FrameView.cpp
+++ b/Source/core/frame/FrameView.cpp
@@ -680,8 +680,11 @@ bool FrameView::hasCompositedContent() const
 
 bool FrameView::isEnclosedInCompositingLayer() const
 {
+    // FIXME: It's a bug that compositing state isn't always up to date when this is called. crbug.com/366314
+    DisableCompositingQueryAsserts disabler;
+
     RenderObject* frameOwnerRenderer = m_frame->ownerRenderer();
-    if (frameOwnerRenderer && frameOwnerRenderer->containerForRepaint())
+    if (frameOwnerRenderer && frameOwnerRenderer->enclosingLayer()->enclosingCompositingLayerForRepaint())
         return true;
 
     if (FrameView* parentView = parentFrameView())