Make DisplayItemClient an interface

third_party/WebKit/Source/core/paint/TransformRecorder.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/TransformRecorder.h"
 
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/paint/PaintController.h"
 #include "platform/graphics/paint/TransformDisplayItem.h"
 
 namespace blink {
 
-TransformRecorder::TransformRecorder(GraphicsContext& context, const DisplayItemClientWrapper& client, const AffineTransform& transform)
+TransformRecorder::TransformRecorder(GraphicsContext& context, const DisplayItemClient& client, const AffineTransform& transform)
     : m_context(context)
     , m_client(client)
 {
     m_skipRecordingForIdentityTransform = transform.isIdentity();
 
     if (m_skipRecordingForIdentityTransform)
         return;
 
     m_context.paintController().createAndAppend<BeginTransformDisplayItem>(m_client, transform);
 }
 
 TransformRecorder::~TransformRecorder()
 {
     if (m_skipRecordingForIdentityTransform)
         return;
 
     m_context.paintController().endItem<EndTransformDisplayItem>(m_client);
 }
 
 } // namespace blink