Removed parameter that is always true.

Source/core/rendering/InlineTextBox.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2009, 2010, 2011 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.
  *
@@ skipping 54 matching lines @@
     unsigned end() const { return m_len ? m_start + m_len - 1 : m_start; }
     unsigned len() const { return m_len; }
 
     void setStart(unsigned start) { m_start = start; }
     void setLen(unsigned len) { m_len = len; }
 
     void offsetRun(int d) { ASSERT(!isDirty()); m_start += d; }
 
     unsigned short truncation() { return m_truncation; }
 
-    virtual void markDirty(bool dirty = true) OVERRIDE FINAL;
+    virtual void markDirty() OVERRIDE FINAL;
 
     using InlineBox::hasHyphen;
     using InlineBox::setHasHyphen;
     using InlineBox::canHaveLeadingExpansion;
     using InlineBox::setCanHaveLeadingExpansion;
 
     static inline bool compareByStart(const InlineTextBox* first, const InlineTextBox* second) { return first->start() < second->start(); }
 
     virtual int baselinePosition(FontBaseline) const OVERRIDE FINAL;
     virtual LayoutUnit lineHeight() const OVERRIDE FINAL;
@@ skipping 120 matching lines @@
 
 inline AffineTransform InlineTextBox::rotation(const FloatRect& boxRect, RotationDirection rotationDirection)
 {
     return rotationDirection == Clockwise ? AffineTransform(0, 1, -1, 0, boxRect.x() + boxRect.maxY(), boxRect.maxY() - boxRect.x())
         : AffineTransform(0, -1, 1, 0, boxRect.x() - boxRect.maxY(), boxRect.x() + boxRect.maxY());
 }
 
 } // namespace WebCore
 
 #endif // InlineTextBox_h