Set multiplier to 1 on blocks with no direct text children.

Source/core/rendering/FastTextAutosizer.h

 /*
  * 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 227 matching lines @@
         bool m_pageNeedsAutosizing;
         bool m_hasAutosized;
         bool m_settingEnabled;
     };
 
     explicit FastTextAutosizer(const Document*);
 
     void beginLayout(RenderBlock*);
     void endLayout(RenderBlock*);
     void inflateAutoTable(RenderTable*);
-    void inflate(RenderBlock*);
+    float inflate(RenderObject*, float multiplier = 0);
     bool shouldHandleLayout() const;
     void setAllTextNeedsLayout();
     void resetMultipliers();
     BeginLayoutBehavior prepareForLayout(const RenderBlock*);
     void prepareClusterStack(const RenderObject*);
     bool clusterHasEnoughTextToAutosize(Cluster*, const RenderBlock* widthProvider = 0);
     bool superclusterHasEnoughTextToAutosize(Supercluster*, const RenderBlock* widthProvider = 0);
     bool clusterWouldHaveEnoughTextToAutosize(const RenderBlock* root, const RenderBlock* widthProvider = 0);
     Fingerprint getFingerprint(const RenderObject*);
     Fingerprint computeFingerprint(const RenderObject*);
@@ skipping 38 matching lines @@
     FingerprintMapper m_fingerprintMapper;
     Vector<RefPtr<RenderStyle> > m_stylesRetainedDuringLayout;
     // FIXME: All frames should share the same m_pageInfo instance.
     PageInfo m_pageInfo;
     bool m_updatePageInfoDeferred;
 };
 
 } // namespace WebCore
 
 #endif // FastTextAutosizer_h