blink: Cleanup class forward declarations

third_party/WebKit/Source/modules/accessibility/AXTableColumn.h

 /*
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 18 matching lines @@
 #ifndef AXTableColumn_h
 #define AXTableColumn_h
 
 #include "modules/ModulesExport.h"
 #include "modules/accessibility/AXMockObject.h"
 #include "modules/accessibility/AXTable.h"
 
 namespace blink {
 
 class AXObjectCacheImpl;
-class LayoutTableSection;
 
 class MODULES_EXPORT AXTableColumn final : public AXMockObject {
   WTF_MAKE_NONCOPYABLE(AXTableColumn);
 
  private:
   explicit AXTableColumn(AXObjectCacheImpl&);
 
  public:
   static AXTableColumn* create(AXObjectCacheImpl&);
   ~AXTableColumn() override;
@@ skipping 16 matching lines @@
 
   bool isTableCol() const override { return true; }
   bool computeAccessibilityIsIgnored(IgnoredReasons* = nullptr) const override;
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXTableColumn, isTableCol());
 
 }  // namespace blink
 
 #endif  // AXTableColumn_h