blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/layout/line/InlineFlowBox.h

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2007 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 11 matching lines @@
 #define InlineFlowBox_h
 
 #include "core/layout/OverflowModel.h"
 #include "core/layout/api/SelectionState.h"
 #include "core/layout/line/InlineBox.h"
 #include "core/style/ShadowData.h"
 #include <memory>
 
 namespace blink {
 
-class HitTestRequest;
 class HitTestResult;
 class InlineTextBox;
 class LineBoxList;
 class SimpleFontData;
 class VerticalPositionCache;
 
 struct GlyphOverflow;
 
 typedef HashMap<const InlineTextBox*,
                 std::pair<Vector<const SimpleFontData*>, GlyphOverflow>>
@@ skipping 446 matching lines @@
 
 inline void InlineFlowBox::setHasBadChildList() {
 #if ENABLE(ASSERT)
   m_hasBadChildList = true;
 #endif
 }
 
 }  // namespace blink
 
 #endif  // InlineFlowBox_h