Introduce enum class TextAffinity as replacement of enum EAffinity

Source/core/editing/Position.h

 /*
  * Copyright (C) 2004, 2006, 2008 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef Position_h
 #define Position_h
 
 #include "core/CoreExport.h"
 #include "core/dom/ContainerNode.h"
 #include "core/editing/EditingBoundary.h"
 #include "core/editing/EditingStrategy.h"
-#include "core/editing/TextAffinity.h"
 #include "platform/heap/Handle.h"
 #include "platform/text/TextDirection.h"
 #include "wtf/Assertions.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class Element;
 class InlineBox;
 class Node;
 class LayoutObject;
 class Text;
+enum class TextAffinity;
 class TreeScope;
 
 struct InlineBoxPosition {
     InlineBox* inlineBox;
     int offsetInBox;
 
     InlineBoxPosition()
         : inlineBox(nullptr), offsetInBox(0)
     {
     }
@@ skipping 132 matching lines @@
     bool atStartOfTree() const;
     bool atEndOfTree() const;
 
     // These return useful visually equivalent positions.
     PositionAlgorithm<Strategy> upstream(EditingBoundaryCrossingRule = CannotCrossEditingBoundary) const;
     PositionAlgorithm<Strategy> downstream(EditingBoundaryCrossingRule = CannotCrossEditingBoundary) const;
 
     bool isCandidate() const;
     bool inRenderedText() const;
 
-    InlineBoxPosition computeInlineBoxPosition(EAffinity) const;
-    InlineBoxPosition computeInlineBoxPosition(EAffinity, TextDirection primaryDirection) const;
+    InlineBoxPosition computeInlineBoxPosition(TextAffinity) const;
+    InlineBoxPosition computeInlineBoxPosition(TextAffinity, TextDirection primaryDirection) const;
 
     static bool hasRenderedNonAnonymousDescendantsWithHeight(LayoutObject*);
     static bool nodeIsUserSelectNone(Node*);
     static bool nodeIsUserSelectAll(const Node*);
     static Node* rootUserSelectAllForNode(Node*);
     static PositionAlgorithm<Strategy> beforeNode(Node* anchorNode);
     static PositionAlgorithm<Strategy> afterNode(Node* anchorNode);
     static PositionAlgorithm<Strategy> inParentBeforeNode(const Node& anchorNode);
     static PositionAlgorithm<Strategy> inParentAfterNode(const Node& anchorNode);
     static int lastOffsetInNode(Node* anchorNode);
@@ skipping 236 matching lines @@
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const blink::Position&);
 void showTree(const blink::Position*);
 #endif
 
 #endif // Position_h