Mark when we may have been invalidated to early out on repaintTreeAfterLayout.

Source/core/rendering/RenderLayer.cpp

Index: Source/core/rendering/RenderLayer.cpp
diff --git a/Source/core/rendering/RenderLayer.cpp b/Source/core/rendering/RenderLayer.cpp
index 922e1a0ac76c8457a90283c6a378e9e52580d84b..45f7dcc3f6a892bde6844a70e4a94cc40252291c 100644
--- a/Source/core/rendering/RenderLayer.cpp
+++ b/Source/core/rendering/RenderLayer.cpp
@@ -499,6 +499,7 @@ void RenderLayer::updateLayerPositionsAfterScroll(RenderGeometryMap* geometryMap
     if ((flags & IsOverflowScroll) && (flags & HasSeenAncestorWithOverflowClip) && !m_canSkipRepaintRectsUpdateOnScroll) {
         // FIXME: We could track the repaint container as we walk down the tree.
         repainter().computeRepaintRects(renderer()->containerForRepaint());
+        renderer()->setMayNeedInvalidation(true);
     } else {
         // Check that RenderLayerRepainter's cached rects are correct.
         // FIXME: re-enable these assertions when the issue with table cells is resolved: https://bugs.webkit.org/show_bug.cgi?id=103432
@@ -941,6 +942,8 @@ bool RenderLayer::updateLayerPosition()
     LayoutPoint localPoint;
     LayoutSize inlineBoundingBoxOffset; // We don't put this into the RenderLayer x/y for inlines, so we need to subtract it out when done.
 
+    renderer()->setMayNeedInvalidation(true);
+
     if (renderer()->isInline() && renderer()->isRenderInline()) {
         RenderInline* inlineFlow = toRenderInline(renderer());
         IntRect lineBox = inlineFlow->linesBoundingBox();