Move LineLayoutState forward declaration to LayoutBlockFlow.

third_party/WebKit/Source/core/layout/LayoutBlock.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 16 matching lines @@
 #include "core/layout/FloatingObjects.h"
 #include "core/layout/GapRects.h"
 #include "core/layout/LayoutBox.h"
 #include "core/style/ShapeValue.h"
 #include "platform/text/TextBreakIterator.h"
 #include "wtf/ListHashSet.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
-class LineLayoutState;
 struct PaintInfo;
 class LayoutInline;
 class WordMeasurement;
 
 typedef WTF::ListHashSet<LayoutBox*, 16> TrackedLayoutBoxListHashSet;
 typedef WTF::HashMap<const LayoutBlock*, OwnPtr<TrackedLayoutBoxListHashSet>> TrackedDescendantsMap;
 typedef WTF::HashMap<const LayoutBox*, LayoutBlock*> TrackedContainerMap;
 typedef Vector<WordMeasurement, 64> WordMeasurements;
 
 enum ContainingBlockState { NewContainingBlock, SameContainingBlock };
@@ skipping 48 matching lines @@
 //         continue;
 //
 //     // Handle normal flow children.
 //     ...
 // }
 // for (LayoutBox* positionedObject : positionedObjects()) {
 //     // Handle out-of-flow positioned objects.
 //     ...
 // }
 class CORE_EXPORT LayoutBlock : public LayoutBox {
-public:
-    friend class LineLayoutState;
-
 protected:
     explicit LayoutBlock(ContainerNode*);
     ~LayoutBlock() override;
 
 public:
     LayoutObject* firstChild() const { ASSERT(children() == virtualChildren()); return children()->firstChild(); }
     LayoutObject* lastChild() const { ASSERT(children() == virtualChildren()); return children()->lastChild(); }
 
     // If you have a LayoutBlock, use firstChild or lastChild instead.
     void slowFirstChild() const = delete;
@@ skipping 326 matching lines @@
     // FIXME: This is temporary as we move code that accesses block flow
     // member variables out of LayoutBlock and into LayoutBlockFlow.
     friend class LayoutBlockFlow;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBlock, isLayoutBlock());
 
 } // namespace blink
 
 #endif // LayoutBlock_h