ALL-IN-ONE Introduce enum class TextAffinity

Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 2311 matching lines @@
         // Taking the ownership since setSelection() may release the last reference to |frame|.
         RefPtrWillBeRawPtr<LocalFrame> frame(document().frame());
         if (!frame)
             return;
 
         // When focusing an editable element in an iframe, don't reset the selection if it already contains a selection.
         if (this == frame->selection().rootEditableElement())
             return;
 
         // FIXME: We should restore the previous selection if there is one.
-        VisibleSelection newSelection = VisibleSelection(firstPositionInOrBeforeNode(this), DOWNSTREAM);
+        VisibleSelection newSelection = VisibleSelection(firstPositionInOrBeforeNode(this), TextAffinity::Downstream);
         // Passing DoNotSetFocus as this function is called after FocusController::setFocusedElement()
         // and we don't want to change the focus to a new Element.
         frame->selection().setSelection(newSelection,  FrameSelection::CloseTyping | FrameSelection::ClearTypingStyle | FrameSelection::DoNotSetFocus);
         frame->selection().revealSelection();
     } else if (layoutObject() && !layoutObject()->isLayoutPart()) {
         layoutObject()->scrollRectToVisible(boundingBox());
     }
 }
 
 void Element::blur()
@@ skipping 1155 matching lines @@
 {
 #if ENABLE(OILPAN)
     if (hasRareData())
         visitor->trace(elementRareData());
     visitor->trace(m_elementData);
 #endif
     ContainerNode::trace(visitor);
 }
 
 } // namespace blink