Fix lazy parsing for functions that use super.

test/mjsunit/harmony/classes-lazy-parsing.js

Index: test/mjsunit/harmony/classes-lazy-parsing.js
diff --git a/test/mjsunit/harmony/classes-lazy-parsing.js b/test/mjsunit/harmony/classes-lazy-parsing.js
new file mode 100644
index 0000000000000000000000000000000000000000..2c0301957a494e377e8143801fa2588eab047e72
--- /dev/null
+++ b/test/mjsunit/harmony/classes-lazy-parsing.js
@@ -0,0 +1,21 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-classes --min-preparse-length=0
+
+'use strict';
+
+class Base {
+  m() {
+    return 42;
+  }
+}
+
+class Derived extends Base {
+  m() {
+    return super.m();
+  }
+}
+
+assertEquals(42, new Derived().m());