Make DisplayItem::replay const.

third_party/WebKit/Source/platform/graphics/paint/Transform3DDisplayItem.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 "platform/graphics/paint/Transform3DDisplayItem.h"
 
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/transforms/AffineTransform.h"
 #include "public/platform/WebDisplayItemList.h"
 
 namespace blink {
 
-void BeginTransform3DDisplayItem::replay(GraphicsContext& context)
+void BeginTransform3DDisplayItem::replay(GraphicsContext& context) const
 {
     TransformationMatrix transform(m_transform);
     transform.applyTransformOrigin(m_transformOrigin);
     context.save();
     context.concatCTM(transform.toAffineTransform());
 }
 
 void BeginTransform3DDisplayItem::appendToWebDisplayItemList(WebDisplayItemList* list) const
 {
     // TODO(jbroman): The compositor will need the transform origin separately.
@@ skipping 13 matching lines @@
             decomposition.translateX, decomposition.translateY, decomposition.translateZ,
             decomposition.scaleX, decomposition.scaleY, decomposition.scaleZ,
             decomposition.skewXY, decomposition.skewXZ, decomposition.skewYZ,
             decomposition.quaternionX, decomposition.quaternionY, decomposition.quaternionZ, decomposition.quaternionW,
             decomposition.perspectiveX, decomposition.perspectiveY, decomposition.perspectiveZ, decomposition.perspectiveW));
     }
     stringBuilder.append(String::format(", transformOrigin: [%f,%f,%f]", m_transformOrigin.x(), m_transformOrigin.y(), m_transformOrigin.z()));
 }
 #endif
 
-void EndTransform3DDisplayItem::replay(GraphicsContext& context)
+void EndTransform3DDisplayItem::replay(GraphicsContext& context) const
 {
     context.restore();
 }
 
 void EndTransform3DDisplayItem::appendToWebDisplayItemList(WebDisplayItemList* list) const
 {
     list->appendEndTransformItem();
 }
 
 } // namespace blink