[Extensions] Update generated code to support move operations

tools/json_schema_compiler/test/objects_movable.idl

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Movable Objects.
+[use_movable_types=true] namespace objectsMovable {
+  enum Foo {
+    BAR,
+    BAZ
+  };
+
+  dictionary MovablePod {
+    Foo foo;
+    DOMString str;
+    long num;
+    boolean b;
+  };
+
+  dictionary MovableParent {
+    MovablePod[] pods;
+    DOMString[] strs;
+  };
+};