Invalidate first line display item clients when first line style changes

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
  * modify it under the terms of the GNU Library General Public
@@ skipping 1519 matching lines @@
 
     bool isTextOrSVGChild() const { return isText() || (isSVG() && !isSVGRoot()); }
 
     static bool isAllowedToModifyLayoutTreeStructure(Document&);
 
     // The passed rect is mutated into the coordinate space of the paint invalidation container.
     const LayoutBoxModelObject* invalidatePaintRectangleInternal(const LayoutRect&) const;
 
     static LayoutPoint uninitializedPaintOffset() { return LayoutPoint(LayoutUnit::max(), LayoutUnit::max()); }
 
+    virtual void invalidateDisplayItemClientsOfFirstLine() { ASSERT_NOT_REACHED(); }
+
     RefPtr<ComputedStyle> m_style;
 
     // Oilpan: This untraced pointer to the owning Node is considered safe.
     RawPtrWillBeUntracedMember<Node> m_node;
 
     LayoutObject* m_parent;
     LayoutObject* m_previous;
     LayoutObject* m_next;
 
 #if ENABLE(ASSERT)
@@ skipping 490 matching lines @@
 void showTree(const blink::LayoutObject*);
 void showLineTree(const blink::LayoutObject*);
 void showLayoutTree(const blink::LayoutObject* object1);
 // We don't make object2 an optional parameter so that showLayoutTree
 // can be called from gdb easily.
 void showLayoutTree(const blink::LayoutObject* object1, const blink::LayoutObject* object2);
 
 #endif
 
 #endif // LayoutObject_h