Changed EOverflowAnchor to an enum class and renamed its members

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 947 matching lines @@
   lifecycle().advanceTo(DocumentLifecycle::StyleClean);
 
   if (shouldPerformScrollAnchoring())
     m_scrollAnchor.notifyBeforeLayout();
 }
 
 bool FrameView::shouldPerformScrollAnchoring() const {
   return RuntimeEnabledFeatures::scrollAnchoringEnabled() &&
          !RuntimeEnabledFeatures::rootLayerScrollingEnabled() &&
          m_scrollAnchor.hasScroller() &&
-         layoutBox()->style()->overflowAnchor() != AnchorNone &&
+         layoutBox()->style()->overflowAnchor() != EOverflowAnchor::None &&
          !m_frame->document()->finishingOrIsPrinting();
 }
 
 static inline void layoutFromRootObject(LayoutObject& root) {
   LayoutState layoutState(root);
   root.layout();
 }
 
 void FrameView::prepareLayoutAnalyzer() {
   bool isTracing = false;
@@ skipping 3696 matching lines @@
   DCHECK(m_frame->isMainFrame());
   return m_initialViewportSize.width();
 }
 
 int FrameView::initialViewportHeight() const {
   DCHECK(m_frame->isMainFrame());
   return m_initialViewportSize.height();
 }
 
 }  // namespace blink