[RAL] Make sure RenderLayers are invalidated when moved.

Source/core/rendering/RenderObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 984 matching lines @@
     void setOnlyNeededPositionedMovementLayout(bool b) { m_bitfields.setOnlyNeededPositionedMovementLayout(b); }
 
     void clearRepaintState();
 
     // layoutDidGetCalled indicates whether this render object was re-laid-out
     // since the last call to setLayoutDidGetCalled(false) on this object.
     bool layoutDidGetCalled() { return m_bitfields.layoutDidGetCalled(); }
     void setLayoutDidGetCalled(bool b) { m_bitfields.setLayoutDidGetCalled(b); }
 
     bool mayNeedInvalidation() { return m_bitfields.mayNeedInvalidation(); }
+    void setMayNeedInvalidationNonRecursive(bool b) { m_bitfields.setMayNeedInvalidation(b); }

[Julien - ping for review, 2014/05/27 12:34:53]

Not a huge fan of 'non-recursive' as it doesn't give us much. I would just have
a 'self' function and a function marking the parent chain (like what we have for
selfNeedsLayout()).

[dsinclair, 2014/05/27 15:37:13]

Done.

     void setMayNeedInvalidation(bool b)
     {
-        m_bitfields.setMayNeedInvalidation(b);
+        setMayNeedInvalidationNonRecursive(b);
 
         // Make sure our parent is marked as needing invalidation.
         if (b && parent() && !parent()->mayNeedInvalidation())
             parent()->setMayNeedInvalidation(b);
     }
 
     bool shouldCheckForInvalidationAfterLayout()
     {
         return layoutDidGetCalled() || mayNeedInvalidation();
     }
@@ skipping 460 matching lines @@
 void showTree(const WebCore::RenderObject*);
 void showLineTree(const WebCore::RenderObject*);
 void showRenderTree(const WebCore::RenderObject* object1);
 // We don't make object2 an optional parameter so that showRenderTree
 // can be called from gdb easily.
 void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderObject* object2);
 
 #endif
 
 #endif // RenderObject_h