[RAL] Fix nested non-composited RenderView repainting

Source/core/rendering/RenderView.cpp

Index: Source/core/rendering/RenderView.cpp
diff --git a/Source/core/rendering/RenderView.cpp b/Source/core/rendering/RenderView.cpp
index e03ec3d79228cc71ba969447be9e8a7df78cbb1b..6eb8e8effbb9f9df4a71918d4b245a05304e9916 100644
--- a/Source/core/rendering/RenderView.cpp
+++ b/Source/core/rendering/RenderView.cpp
@@ -445,6 +445,19 @@ void RenderView::paintBoxDecorations(PaintInfo& paintInfo, const LayoutPoint&)
     }
 }
 
+void RenderView::invalidateTreeAfterLayout(const RenderLayerModelObject& paintInvalidationContainer)
+{
+    ASSERT(RuntimeEnabledFeatures::repaintAfterLayoutEnabled());
+    ASSERT(!needsLayout());
+
+    // We specifically need to repaint the viewRect since other renderers
+    // short-circuit on full-repaint.
+    if (doingFullRepaint() && !viewRect().isEmpty())
+        repaintViewRectangle(viewRect());
+
+    RenderBlock::invalidateTreeAfterLayout(paintInvalidationContainer);
+}
+
 void RenderView::repaintViewRectangle(const LayoutRect& ur) const
 {
     ASSERT(!ur.isEmpty());
@@ -455,9 +468,12 @@ void RenderView::repaintViewRectangle(const LayoutRect& ur) const
     // We always just invalidate the root view, since we could be an iframe that is clipped out
     // or even invisible.
     Element* elt = document().ownerElement();
-    if (!elt)
-        m_frameView->repaintContentRectangle(pixelSnappedIntRect(ur));
-    else if (RenderBox* obj = elt->renderBox()) {
+    if (!elt) {
+        if (hasLayer() && layer()->compositingState() == PaintsIntoOwnBacking)
+            layer()->repainter().setBackingNeedsRepaintInRect(ur);
+        else
+            m_frameView->repaintContentRectangle(pixelSnappedIntRect(ur));
+    } else if (RenderBox* obj = elt->renderBox()) {
         LayoutRect vr = viewRect();
         LayoutRect r = intersection(ur, vr);