Move LayoutObject::nextOffset/previousOffset() to editing utility

third_party/WebKit/Source/core/layout/api/LineLayoutItem.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef LineLayoutItem_h
 #define LineLayoutItem_h
 
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutObjectInlines.h"
 
@@ skipping 372 matching lines @@
     LineLayoutItem previousInPreOrder(const LayoutObject* stayWithin) const
     {
         return LineLayoutItem(m_layoutObject->previousInPreOrder(stayWithin));
     }
 
     FloatQuad localToAbsoluteQuad(const FloatQuad& quad, MapCoordinatesFlags mode = 0, bool* wasFixed = nullptr) const
     {
         return m_layoutObject->localToAbsoluteQuad(quad, mode, wasFixed);
     }
 
-    int previousOffset(int current) const
-    {
-        return m_layoutObject->previousOffset(current);
-    }
-
-    int nextOffset(int current) const
-    {
-        return m_layoutObject->nextOffset(current);
-    }
-
     FloatPoint localToAbsolute(const FloatPoint& localPoint = FloatPoint(), MapCoordinatesFlags flags = 0) const
     {
         return m_layoutObject->localToAbsolute(localPoint, flags);
     }
 
     bool hasOverflowClip() const
     {
         return m_layoutObject->hasOverflowClip();
     }
 
@@ skipping 78 matching lines @@
 
 template <>
 struct HashTraits<blink::LineLayoutItem> : SimpleClassHashTraits<blink::LineLayoutItem> {
     STATIC_ONLY(HashTraits);
 };
 
 } // namespace WTF
 
 
 #endif // LineLayoutItem_h