[SPv2] Paint invalidation in PreWalkTreeWalk, plumbed on PaintInvalidationState

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

 // Copyright 2015 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 PrePaintTreeWalk_h
 #define PrePaintTreeWalk_h
 
+#include "core/paint/PaintInvalidator.h"
 #include "core/paint/PaintPropertyTreeBuilder.h"
 
 namespace blink {
 
 class FrameView;
 class LayoutObject;
 struct PrePaintTreeWalkContext;
 
 // This class walks the whole layout tree, beginning from the root FrameView, across
 // frame boundaries. Helper classes are called for each tree node to perform actual actions.
 // It expects to be invoked in InPrePaint phase.
 class PrePaintTreeWalk {
 public:
     void walk(FrameView& rootFrame);
 
 private:
     void walk(FrameView&, const PrePaintTreeWalkContext&);
     void walk(const LayoutObject&, const PrePaintTreeWalkContext&);
 
     PaintPropertyTreeBuilder m_propertyTreeBuilder;
+    PaintInvalidator m_paintInvalidator;
 };
 
 } // namespace blink
 
 #endif // PrePaintTreeWalk_h