Refactor OverlayScrollbarSizeRelevancy into OverlayScrollbarClipBehavior

third_party/WebKit/Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 3236 matching lines @@
         m_scrollAnchor.clear();
 }
 
 void FrameView::windowResizerRectChanged()
 {
     updateScrollbars();
 }
 
 bool FrameView::hasOverlayScrollbars() const
 {
-
     return (m_horizontalScrollbar && m_horizontalScrollbar->isOverlayScrollbar())
         || (m_verticalScrollbar && m_verticalScrollbar->isOverlayScrollbar());
 }
 
 void FrameView::computeScrollbarExistence(bool& newHasHorizontalScrollbar, bool& newHasVerticalScrollbar, const IntSize& docSize, ComputeScrollbarExistenceOption option) const
 {
     bool hasHorizontalScrollbar = m_horizontalScrollbar;
     bool hasVerticalScrollbar = m_verticalScrollbar;
 
     newHasHorizontalScrollbar = hasHorizontalScrollbar;
@@ skipping 799 matching lines @@
     return m_hiddenForThrottling && m_crossOriginForThrottling;
 }
 
 LayoutBox& FrameView::boxForScrollControlPaintInvalidation() const
 {
     ASSERT(layoutView());
     return *layoutView();
 }
 
 } // namespace blink