Make DisplayItemClient an interface

third_party/WebKit/Source/core/paint/FloatClipRecorder.cpp

 // 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.
 
 #include "config.h"
 #include "core/paint/FloatClipRecorder.h"
 
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/paint/FloatClipDisplayItem.h"
 #include "platform/graphics/paint/PaintController.h"
 
 namespace blink {
 
-FloatClipRecorder::FloatClipRecorder(GraphicsContext& context, const DisplayItemClientWrapper& client, PaintPhase paintPhase, const FloatRect& clipRect)
+FloatClipRecorder::FloatClipRecorder(GraphicsContext& context, const DisplayItemClient& client, PaintPhase paintPhase, const FloatRect& clipRect)
     : m_context(context)
     , m_client(client)
     , m_clipType(DisplayItem::paintPhaseToFloatClipType(paintPhase))
 {
     m_context.paintController().createAndAppend<FloatClipDisplayItem>(m_client, m_clipType, clipRect);
 }
 
 FloatClipRecorder::~FloatClipRecorder()
 {
     DisplayItem::Type endType = DisplayItem::floatClipTypeToEndFloatClipType(m_clipType);
     m_context.paintController().endItem<EndFloatClipDisplayItem>(m_client, endType);
 }
 
 } // namespace blink