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

Source/core/rendering/FastTextAutosizer.cpp

Index: Source/core/rendering/FastTextAutosizer.cpp
diff --git a/Source/core/rendering/FastTextAutosizer.cpp b/Source/core/rendering/FastTextAutosizer.cpp
index 75760b10983e62cb3e4dc56cf4b9b5e71f3cbf50..ede8ff151f63c1e024ea80fcc7ce9fdcf9635f46 100644
--- a/Source/core/rendering/FastTextAutosizer.cpp
+++ b/Source/core/rendering/FastTextAutosizer.cpp
@@ -616,7 +616,8 @@ bool FastTextAutosizer::clusterHasEnoughTextToAutosize(Cluster* cluster, const R
     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;
             }