Limit the number of transitions allowed per hidden class.

test/cctest/test-heap.cc

Index: test/cctest/test-heap.cc
diff --git a/test/cctest/test-heap.cc b/test/cctest/test-heap.cc
index ac121e059fe9a313e921d656918281da96d105eb..eef43dc6147ea9afb7308b3b9877c7f7d2daf7bd 100644
--- a/test/cctest/test-heap.cc
+++ b/test/cctest/test-heap.cc
@@ -2848,6 +2848,7 @@ TEST(TransitionArrayShrinksDuringAllocToZero) {
              "root = new F");
   root = GetByName("root");
   AddPropertyTo(2, root, "funny");
+  CcTest::heap()->CollectGarbage(NEW_SPACE);
 
   // Count number of live transitions after marking.  Note that one transition
   // is left, because 'o' still holds an instance of one transition target.
@@ -2874,6 +2875,7 @@ TEST(TransitionArrayShrinksDuringAllocToOne) {
 
   root = GetByName("root");
   AddPropertyTo(2, root, "funny");
+  CcTest::heap()->CollectGarbage(NEW_SPACE);
 
   // Count number of live transitions after marking.  Note that one transition
   // is left, because 'o' still holds an instance of one transition target.