Array and map members for unions.

mojo/public/interfaces/bindings/tests/test_unions.mojom

 // Copyright 2014 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.
 
 module mojo.test;
 
 union PodUnion {
   int8   f_int8;
   int8   f_int8_other;
   uint8  f_uint8;
   int16  f_int16;
   uint16 f_uint16;
   int32  f_int32;
   uint32 f_uint32;
   int64  f_int64;
   uint64 f_uint64;
   float  f_float;
   double f_double;
   bool   f_bool;
 };
 
 union ObjectUnion {
   int8   f_int8;
   string f_string;
   DummyStruct f_dummy;
   DummyStruct? f_nullable;
+  array<int8> f_array_int8;
+  map<string, int8> f_map_int8;
 };
 
 struct DummyStruct {
   int8 f_int8;
 };
 
 struct SmallStruct {
   DummyStruct? dummy_struct;
   PodUnion? pod_union;
   array<PodUnion>? pod_union_array;
   array<DummyStruct>? s_array;
   map<string, PodUnion>? pod_union_map;
 };
 
 struct SmallStructNonNullableUnion {
   PodUnion pod_union;
 };
 
 struct SmallObjStruct {
   ObjectUnion obj_union;
 };