blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/paint/TableCellPainter.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef TableCellPainter_h
 #define TableCellPainter_h
 
 #include "core/style/CollapsedBorderValue.h"
 #include "platform/graphics/paint/DisplayItem.h"
 #include "wtf/Allocator.h"
 
 namespace blink {
 
 struct PaintInfo;
 class CollapsedBorderValue;
 class LayoutPoint;
 class LayoutRect;
 class LayoutTableCell;
 class LayoutObject;
-class ComputedStyle;
 
 class TableCellPainter {
   STACK_ALLOCATED();
 
  public:
   TableCellPainter(const LayoutTableCell& layoutTableCell)
       : m_layoutTableCell(layoutTableCell) {}
 
   void paint(const PaintInfo&, const LayoutPoint&);
 
@@ skipping 15 matching lines @@
   void paintBackground(const PaintInfo&,
                        const LayoutRect&,
                        const LayoutObject& backgroundObject);
 
   const LayoutTableCell& m_layoutTableCell;
 };
 
 }  // namespace blink
 
 #endif  // TableCellPainter_h