Fix overflow:overlay scrollbar width for paint.

third_party/WebKit/Source/core/layout/api/LayoutBoxItem.h

 // Copyright 2016 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 LayoutBoxItem_h
 #define LayoutBoxItem_h
 
 #include "core/layout/LayoutBox.h"
 #include "core/layout/api/LayoutBoxModel.h"
 #include "platform/scroll/ScrollTypes.h"
@@ skipping 31 matching lines @@
   LayoutUnit logicalWidth() const { return toBox()->logicalWidth(); }
 
   LayoutUnit logicalHeight() const { return toBox()->logicalHeight(); }
 
   LayoutUnit minPreferredLogicalWidth() const {
     return toBox()->minPreferredLogicalWidth();
   }
 
   LayoutRect overflowClipRect(const LayoutPoint& location,
                               OverlayScrollbarClipBehavior behavior =
-                                  IgnoreOverlayScrollbarSize) const {
+                                  IgnorePlatformOverlayScrollbarSize) const {
     return toBox()->overflowClipRect(location, behavior);
   }
 
   LayoutSize contentBoxOffset() const { return toBox()->contentBoxOffset(); }
 
   void mapLocalToAncestor(
       const LayoutBoxModelObject* ancestor,
       TransformState& state,
       MapCoordinatesFlags flags = ApplyContainerFlip) const {
     toBox()->mapLocalToAncestor(ancestor, state, flags);
   }
 
   FloatQuad absoluteContentQuad(MapCoordinatesFlags flags = 0) const {
     return toBox()->absoluteContentQuad(flags);
   }
 
  private:
   LayoutBox* toBox() { return toLayoutBox(layoutObject()); }
 
   const LayoutBox* toBox() const { return toLayoutBox(layoutObject()); }
 };
 
 }  // namespace blink
 
 #endif  // LayoutBoxItem_h