Remove GlyphOverflow.computeBounds as it's no longer used for -webkit-line-box-contain.

Source/core/layout/LayoutText.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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 1093 matching lines @@
 
     if (!styleToUse.autoWrap())
         m_minWidth = m_maxWidth;
 
     if (styleToUse.whiteSpace() == PRE) {
         if (firstLine)
             m_firstLineMinWidth = m_maxWidth;
         m_lastLineLineMinWidth = currMaxWidth;
     }
 
-    // TODO(wkorman): Look into potentially removing GlyphOverflow or at least the
-    // computeBounds field as we no longer use it for line-box-contain implementation.
     GlyphOverflow glyphOverflow;
     glyphOverflow.setFromBounds(glyphBounds, f.fontMetrics().floatAscent(), f.fontMetrics().floatDescent(), m_maxWidth);
     // We shouldn't change our mind once we "know".
     ASSERT(!m_knownToHaveNoOverflowAndNoFallbackFonts || (fallbackFonts.isEmpty() && glyphOverflow.isZero()));
     m_knownToHaveNoOverflowAndNoFallbackFonts = fallbackFonts.isEmpty() && glyphOverflow.isZero();
 
     clearPreferredLogicalWidthsDirty();
 }
 
 bool LayoutText::isAllCollapsibleWhitespace() const
@@ skipping 755 matching lines @@
     for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox()) {
         paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*box);
         if (box->truncation() != cNoTruncation) {
             if (EllipsisBox* ellipsisBox = box->root().ellipsisBox())
                 paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*ellipsisBox);
         }
     }
 }
 
 } // namespace blink