Set objects to need full paint invalidation after clearing their invalidation rects.

third_party/WebKit/Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 2600 matching lines @@
     return String();
 }
 
 String Internals::getProgrammaticScrollAnimationState(Node* node) const
 {
     if (ScrollableArea* scrollableArea = scrollableAreaForNode(node))
         return scrollableArea->programmaticScrollAnimator().runStateAsText();
     return String();
 }
 
+ClientRect* Internals::visualRect(Node* node)
+{
+    if (!node || !node->layoutObject())
+        return ClientRect::create();
+
+    return ClientRect::create(FloatRect(node->layoutObject()->visualRect()));
+}
+
 } // namespace blink