Descend into inner tables for has-enough-text check.

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 598 matching lines @@
         return false;
     }
 
     // 4 lines of text is considered enough to autosize.
     float minimumTextLengthToAutosize = widthFromBlock(widthProvider) * 4;
 
     float length = 0;
     RenderObject* descendant = root->nextInPreOrder(root);
     while (descendant) {
         if (descendant->isRenderBlock()) {
-            if (!descendant->isTableCell() && classifyBlock(descendant, INDEPENDENT | SUPPRESSING)) {
+            if (!(descendant->isTableCell() || (root->isTableCell() && descendant->isTable()))
+                && classifyBlock(descendant, INDEPENDENT | SUPPRESSING)) {
                 descendant = descendant->nextInPreOrderAfterChildren(root);
                 continue;
             }
         } else if (descendant->isText()) {
             // Note: Using text().stripWhiteSpace().length() instead of renderedTextLength() because
             // the lineboxes will not be built until layout. These values can be different.
             // Note: This is an approximation assuming each character is 1em wide.
             length += toRenderText(descendant)->text().stripWhiteSpace().length() * descendant->style()->specifiedFontSize();
 
             if (length >= minimumTextLengthToAutosize) {
@@ skipping 465 matching lines @@
 FastTextAutosizer::DeferUpdatePageInfo::~DeferUpdatePageInfo()
 {
     if (FastTextAutosizer* textAutosizer = m_mainFrame->document()->fastTextAutosizer()) {
         ASSERT(textAutosizer->m_updatePageInfoDeferred);
         textAutosizer->m_updatePageInfoDeferred = false;
         textAutosizer->updatePageInfoInAllFrames();
     }
 }
 
 } // namespace WebCore