[FastTextAutosizer] Fix the inline overlap issue.

Source/core/rendering/FastTextAutosizer.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 394 matching lines @@
             descendant = descendant->nextInPreOrderAfterChildren(block);
             continue;
         }
         if (descendant->isText()) {
             // We only calculate this multiplier on-demand to ensure the parent block of this text
             // has entered layout.
             if (!multiplier)
                 multiplier = cluster->m_autosize ? clusterMultiplier(cluster) : 1.0f;
             applyMultiplier(descendant, multiplier);
             applyMultiplier(descendant->parent(), multiplier); // Parent handles line spacing.
+            // FIXME: Investigate why MarkOnlyThis is sufficient.
+            if (descendant->parent()->isRenderInline())
+                descendant->setPreferredLogicalWidthsDirty(MarkOnlyThis);
         }
         descendant = descendant->nextInPreOrder(block);
     }
 }
 
 bool FastTextAutosizer::enabled()
 {
     if (!m_document->settings() || !m_document->page() || m_document->printing())
         return false;
 
@@ skipping 575 matching lines @@
 FastTextAutosizer::DeferUpdatePageInfo::~DeferUpdatePageInfo()
 {
     if (FastTextAutosizer* textAutosizer = m_mainFrame->document()->fastTextAutosizer()) {
         ASSERT(textAutosizer->m_updatePageInfoDeferred);
         textAutosizer->m_updatePageInfoDeferred = false;
         textAutosizer->updatePageInfoInAllFrames();
     }
 }
 
 } // namespace WebCore