Revert "Move some scroll invalidations to the paint invalidation phase"

Source/core/rendering/RenderObject.cpp

Index: Source/core/rendering/RenderObject.cpp
diff --git a/Source/core/rendering/RenderObject.cpp b/Source/core/rendering/RenderObject.cpp
index 62447b830be9fe0fd91d38a5bd5bdad7bbbfab2c..6e9ef607248ebb712d07200cb038c2ebfab60954 100644
--- a/Source/core/rendering/RenderObject.cpp
+++ b/Source/core/rendering/RenderObject.cpp
@@ -3159,6 +3159,21 @@ void RenderObject::invalidatePaintIncludingNonCompositingDescendantsInternal(con
     }
 }
 
+void forceRecomputePaintInvalidationRectsIncludingNonCompositingDescendants(RenderObject* renderer)
+{
+    // We clear the previous paint invalidation rect as it's wrong (paint invaliation container
+    // changed, ...). Forcing a full invalidation will make us recompute it. Also we are not
+    // changing the previous position from our paint invalidation container, which is fine as
+    // we want a full paint invalidation anyway.
+    renderer->setPreviousPaintInvalidationRect(LayoutRect());
+    renderer->setShouldDoFullPaintInvalidation();
+
+    for (RenderObject* child = renderer->slowFirstChild(); child; child = child->nextSibling()) {
+        if (!child->isPaintInvalidationContainer())
+            forceRecomputePaintInvalidationRectsIncludingNonCompositingDescendants(child);
+    }
+}
+
 
 } // namespace blink