[FastTextAutosizer] Do not pre-inflate nested tables

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 384 matching lines @@
 
                 bool shouldAutosize;
                 if (blockSuppressesAutosizing(renderTableCell))
                     shouldAutosize = false;
                 else if (Supercluster* supercluster = getSupercluster(renderTableCell))
                     shouldAutosize = anyClusterHasEnoughTextToAutosize(supercluster->m_roots, table);
                 else
                     shouldAutosize = clusterWouldHaveEnoughTextToAutosize(renderTableCell, table);
 
                 if (shouldAutosize) {
-                    for (RenderObject* child = cell; child; child = child->nextInPreOrder(cell)) {
-                        if (child->isText() && child->needsLayout()) {
-                            applyMultiplier(child, multiplier);
-                            applyMultiplier(child->parent(), multiplier); // Parent handles line spacing.
+                    RenderObject* child = cell;
+                    while (child) {
+                        if (child->needsLayout() && !child->isTable()) {
+                            if (child->isText()) {
+                                applyMultiplier(child, multiplier);
+                                applyMultiplier(child->parent(), multiplier); // Parent handles line spacing.
+                            }
+                            child = child->nextInPreOrder(cell);
+                        } else {
+                            // Skip inflation of this subtree.
+                            child = child->nextInPreOrderAfterChildren(cell);
                         }
                     }
                 }
             }
         }
     }
 }
 
 void FastTextAutosizer::endLayout(RenderBlock* block)
 {
@@ skipping 654 matching lines @@
 FastTextAutosizer::DeferUpdatePageInfo::~DeferUpdatePageInfo()
 {
     if (FastTextAutosizer* textAutosizer = m_mainFrame->document()->fastTextAutosizer()) {
         ASSERT(textAutosizer->m_updatePageInfoDeferred);
         textAutosizer->m_updatePageInfoDeferred = false;
         textAutosizer->updatePageInfoInAllFrames();
     }
 }
 
 } // namespace WebCore