Fix heap snapshot creation for Harmony collections.

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index 8077adf8e741bbba246a4c7db9188b24c38256d4..f6bee090816cc2e40677bba6665f0e33d9882d51 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -18257,6 +18257,19 @@ THREADED_TEST(Regress157124) {
 }
 
 
+THREADED_TEST(Regress2535) {
+  i::FLAG_harmony_collections = true;
+  v8::HandleScope scope;
+  LocalContext context;
+  Local<Value> set_value = CompileRun("new Set();");
+  Local<Object> set_object(Object::Cast(*set_value));
+  CHECK_EQ(0, set_object->InternalFieldCount());
+  Local<Value> map_value = CompileRun("new Map();");
+  Local<Object> map_object(Object::Cast(*map_value));
+  CHECK_EQ(0, map_object->InternalFieldCount());
+}
+
+
 #ifndef WIN32
 class ThreadInterruptTest {
  public: