Changed EPosition to an enum class and renamed its members

third_party/WebKit/Source/core/layout/LayoutBlockFlow.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 4299 matching lines @@
 
   m_rareData = WTF::makeUnique<LayoutBlockFlowRareData>(this);
   return *m_rareData;
 }
 
 void LayoutBlockFlow::positionDialog() {
   HTMLDialogElement* dialog = toHTMLDialogElement(node());
   if (dialog->getCenteringMode() == HTMLDialogElement::NotCentered)
     return;
 
-  bool canCenterDialog = (style()->position() == AbsolutePosition ||
-                          style()->position() == FixedPosition) &&
+  bool canCenterDialog = (style()->position() == EPosition::kAbsolute ||
+                          style()->position() == EPosition::kFixed) &&
                          style()->hasAutoTopAndBottom();
 
   if (dialog->getCenteringMode() == HTMLDialogElement::Centered) {
     if (canCenterDialog)
       setY(dialog->centeredPosition());
     return;
   }
 
   ASSERT(dialog->getCenteringMode() == HTMLDialogElement::NeedsCentering);
   if (!canCenterDialog) {
     dialog->setNotCentered();
     return;
   }
 
   FrameView* frameView = document().view();
-  LayoutUnit top = LayoutUnit((style()->position() == FixedPosition)
+  LayoutUnit top = LayoutUnit((style()->position() == EPosition::kFixed)
                                   ? 0
                                   : frameView->scrollOffsetInt().height());
   int visibleHeight = frameView->visibleContentRect(IncludeScrollbars).height();
   if (size().height() < visibleHeight)
     top += (visibleHeight - size().height()) / 2;
   setY(top);
   dialog->setCentered(top);
 }
 
 void LayoutBlockFlow::simplifiedNormalFlowInlineLayout() {
@@ skipping 257 matching lines @@
   return LayoutBlock::invalidatePaintIfNeeded(paintInvalidationState);
 }
 
 void LayoutBlockFlow::invalidateDisplayItemClients(
     PaintInvalidationReason invalidationReason) const {
   BlockFlowPaintInvalidator(*this).invalidateDisplayItemClients(
       invalidationReason);
 }
 
 }  // namespace blink