Remove duplicate measure hyphen string method

Source/core/layout/LayoutText.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004-2009, 2013 Apple Inc. 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef LayoutText_h
 #define LayoutText_h
 
 #include "core/CoreExport.h"
 #include "core/dom/Text.h"
 #include "core/layout/LayoutObject.h"
+#include "core/layout/TextRunConstructor.h"
 #include "platform/LengthFunctions.h"
 #include "platform/text/TextPath.h"
 #include "wtf/Forward.h"
 #include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 class AbstractInlineTextBox;
 class InlineTextBox;
 
@@ skipping 95 matching lines @@
     void momentarilyRevealLastTypedCharacter(unsigned lastTypedCharacterOffset);
 
     bool isAllCollapsibleWhitespace() const;
 
     bool canUseSimpleFontCodePath() const { return m_canUseSimpleFontCodePath; }
 
     void removeAndDestroyTextBoxes();
 
     PassRefPtr<AbstractInlineTextBox> firstAbstractInlineTextBox();
 
+    float hyphenWidth(const Font&, TextDirection);
+
 protected:
     virtual void willBeDestroyed() override;
 
     virtual void styleWillChange(StyleDifference, const ComputedStyle&) override final { }
     virtual void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
 
     virtual void setTextInternal(PassRefPtr<StringImpl>);
     virtual UChar previousCharacter() const;
 
     virtual void addLayerHitTestRects(LayerHitTestRects&, const DeprecatedPaintLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const override;
@@ skipping 63 matching lines @@
 }
 
 inline UChar LayoutText::characterAt(unsigned i) const
 {
     if (i >= textLength())
         return 0;
 
     return uncheckedCharacterAt(i);
 }
 
+inline float LayoutText::hyphenWidth(const Font& font, TextDirection direction)
+{
+    const ComputedStyle& style = styleRef();
+    return font.width(constructTextRun(this, font, style.hyphenString().string(), style, direction));
+}
+
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutText, isText());
 
 #if !ENABLE(ASSERT)
 inline void LayoutText::checkConsistency() const
 {
 }
 #endif
 
 inline LayoutText* Text::layoutObject() const
 {
     return toLayoutText(CharacterData::layoutObject());
 }
 
 void applyTextTransform(const ComputedStyle*, String&, UChar);
 
 } // namespace blink
 
 #endif // LayoutText_h