Invalidate previous paint rect in RenderObject::paintInvalidationForWholeRenderer()

Source/core/rendering/RenderObject.h

Index: Source/core/rendering/RenderObject.h
diff --git a/Source/core/rendering/RenderObject.h b/Source/core/rendering/RenderObject.h
index d0fab2e388e5d315914104eb7a911e29a24816aa..00b727bf440806f8d27063a39b3c791538a63b86 100644
--- a/Source/core/rendering/RenderObject.h
+++ b/Source/core/rendering/RenderObject.h
@@ -989,8 +989,18 @@ public:
 
     bool isRelayoutBoundaryForInspector() const;
 
-    const LayoutRect& previousPaintInvalidationRect() const { return m_previousPaintInvalidationRect; }
-    void setPreviousPaintInvalidationRect(const LayoutRect& rect) { m_previousPaintInvalidationRect = rect; }
+    const LayoutRect& previousPaintInvalidationRect() const
+    {
+        ASSERT(savesPreviousPaintInvalidationRect());
+        return m_previousPaintInvalidationRect;
+    }
+    void setPreviousPaintInvalidationRect(const LayoutRect& rect)
+    {
+        ASSERT(savesPreviousPaintInvalidationRect());
+        m_previousPaintInvalidationRect = rect;
+    }
+    // For now only RenderBox and RenderSVGModelObject sets previousPaintInvalidationRect.
+    bool savesPreviousPaintInvalidationRect() const { return isBox() || isSVG(); }
 
     const LayoutPoint& previousPositionFromPaintInvalidationContainer() const { return m_previousPositionFromPaintInvalidationContainer; }
     void setPreviousPositionFromPaintInvalidationContainer(const LayoutPoint& location) { m_previousPositionFromPaintInvalidationContainer = location; }