Fix LayoutObject::SetSubtreeNeedsPaintPropertyUpdate() to set ancestor flags

third_party/WebKit/Source/core/layout/LayoutObject.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
@@ skipping 1835 matching lines @@
   //
   // In addition to tracking if an object needs its own paint properties
   // updated, setNeedsPaintPropertyUpdate marks all ancestors as having a
   // descendant needing a paint property update too.
   void SetNeedsPaintPropertyUpdate();
   bool NeedsPaintPropertyUpdate() const {
     return bitfields_.NeedsPaintPropertyUpdate();
   }
   void SetSubtreeNeedsPaintPropertyUpdate() {
     bitfields_.SetSubtreeNeedsPaintPropertyUpdate(true);
-    bitfields_.SetNeedsPaintPropertyUpdate(true);
+    SetNeedsPaintPropertyUpdate();
   }
   bool SubtreeNeedsPaintPropertyUpdate() const {
     return bitfields_.SubtreeNeedsPaintPropertyUpdate();
   }
   bool DescendantNeedsPaintPropertyUpdate() const {
     return bitfields_.DescendantNeedsPaintPropertyUpdate();
   }
   // Main thread scrolling reasons require fully updating paint propeties of all
   // ancestors (see: ScrollPaintPropertyNode.h).
   void SetAncestorsNeedPaintPropertyUpdateForMainThreadScrolling();
@@ skipping 956 matching lines @@
 CORE_EXPORT void showLineTree(const blink::LayoutObject*);
 CORE_EXPORT void showLayoutTree(const blink::LayoutObject* object1);
 // We don't make object2 an optional parameter so that showLayoutTree
 // can be called from gdb easily.
 CORE_EXPORT void showLayoutTree(const blink::LayoutObject* object1,
                                 const blink::LayoutObject* object2);
 
 #endif
 
 #endif  // LayoutObject_h