Introduce enum class TextAffinity as replacement of enum EAffinity

Source/core/layout/svg/LayoutSVGInlineText.cpp

 /*
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2006 Apple Computer Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 10 matching lines @@
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
 
 #include "core/layout/svg/LayoutSVGInlineText.h"
 
 #include "core/css/CSSFontSelector.h"
 #include "core/css/FontSize.h"
 #include "core/dom/StyleEngine.h"
+#include "core/editing/TextAffinity.h"
 #include "core/editing/VisiblePosition.h"
 #include "core/layout/svg/LayoutSVGText.h"
 #include "core/layout/svg/SVGLayoutSupport.h"
 #include "core/layout/svg/line/SVGInlineTextBox.h"
 
 namespace blink {
 
 static PassRefPtr<StringImpl> applySVGWhitespaceRules(PassRefPtr<StringImpl> string, bool preserveWhiteSpace)
 {
     if (preserveWhiteSpace) {
@@ skipping 163 matching lines @@
                 closestDistanceFragment = &fragment;
                 closestDistancePosition = fragmentRect.x();
             }
         }
     }
 
     if (!closestDistanceFragment)
         return createPositionWithAffinity(0);
 
     int offset = closestDistanceBox->offsetForPositionInFragment(*closestDistanceFragment, absolutePoint.x() - closestDistancePosition, true);
-    return createPositionWithAffinity(offset + closestDistanceBox->start(), offset > 0 ? VP_UPSTREAM_IF_POSSIBLE : DOWNSTREAM);
+    return createPositionWithAffinity(offset + closestDistanceBox->start(), offset > 0 ? VP_UPSTREAM_IF_POSSIBLE : TextAffinity::Downstream);
 }
 
 void LayoutSVGInlineText::updateScaledFont()
 {
     computeNewScaledFontForStyle(this, style(), m_scalingFactor, m_scaledFont);
 }
 
 void LayoutSVGInlineText::computeNewScaledFontForStyle(LayoutObject* layoutObject, const ComputedStyle* style, float& scalingFactor, Font& scaledFont)
 {
     ASSERT(style);
@@ skipping 30 matching lines @@
 
 PassRefPtr<StringImpl> LayoutSVGInlineText::originalText() const
 {
     RefPtr<StringImpl> result = LayoutText::originalText();
     if (!result)
         return nullptr;
     return applySVGWhitespaceRules(result, style() && style()->whiteSpace() == PRE);
 }
 
 }