Advance document lifecycle to CompositingClean prior to hit testing

Source/core/paint/DeprecatedPaintLayer.cpp

Index: Source/core/paint/DeprecatedPaintLayer.cpp
diff --git a/Source/core/paint/DeprecatedPaintLayer.cpp b/Source/core/paint/DeprecatedPaintLayer.cpp
index b8b9445a4982bedc21e676c3f7ff7ac8269f7dea..6669a2ea51bcb44a5884e1ecd936977103f3a465 100644
--- a/Source/core/paint/DeprecatedPaintLayer.cpp
+++ b/Source/core/paint/DeprecatedPaintLayer.cpp
@@ -1808,6 +1808,8 @@ DeprecatedPaintLayer* DeprecatedPaintLayer::hitTestLayer(DeprecatedPaintLayer* r
     const LayoutRect& hitTestRect, const HitTestLocation& hitTestLocation, bool appliedTransform,
     const HitTestingTransformState* transformState, double* zOffset)
 {
+    ASSERT(layoutObject()->document().lifecycle().state() >= DocumentLifecycle::CompositingClean);
+
     if (!isSelfPaintingLayer() && !hasSelfPaintingLayerDescendant())
         return 0;