Empty inline elements always get a line box.

Source/platform/text/BidiResolver.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2006, 2007, 2008 Apple Inc.  All right 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,
@@ skipping 52 matching lines @@
 
     // When ignoring spaces, this needs to be called for objects that need line boxes such as RenderInlines or
     // hard line breaks to ensure that they're not ignored.
     void ensureLineBoxInsideIgnoredSpaces(RenderObject* renderer)
     {
         Iterator midpoint(0, renderer, 0);
         stopIgnoringSpaces(midpoint);
         startIgnoringSpaces(midpoint);
     }
 
+    void ensureLineBoxForRenderer(RenderObject* renderer)
+    {
+        Iterator midpoint(0, renderer, 0);
+        startIgnoringSpaces(midpoint);
+        stopIgnoringSpaces(midpoint);
+    }
+
     // Adding a pair of midpoints before a character will split it out into a new line box.
     void ensureCharacterGetsLineBox(Iterator& textParagraphSeparator)
     {
-        Iterator midpoint(0, textParagraphSeparator.object(), textParagraphSeparator.offset());

[rhogan, 2014/05/27 21:40:04]

This is a redundant line of code I noticed when adding the function above.

         startIgnoringSpaces(Iterator(0, textParagraphSeparator.object(), textParagraphSeparator.offset() - 1));
         stopIgnoringSpaces(Iterator(0, textParagraphSeparator.object(), textParagraphSeparator.offset()));
     }
 
     void checkMidpoints(Iterator& lBreak)
     {
         // Check to see if our last midpoint is a start point beyond the line break. If so,
         // shave it off the list, and shave off a trailing space if the previous end point doesn't
         // preserve whitespace.
         if (lBreak.object() && m_numMidpoints && !(m_numMidpoints % 2)) {
@@ skipping 992 matching lines @@
 template<class Iterator, class Run>
 MidpointState<Iterator> BidiResolver<Iterator, Run>::midpointStateForIsolatedRun(Run* run)
 {
     return m_midpointStateForIsolatedRun.take(run);
 }
 
 
 } // namespace WebCore
 
 #endif // BidiResolver_h