Update mojom parser to allow array of arrays.

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

 // Copyright 2013 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.
 
 import "sample_import.mojom"
 import "sample_import2.mojom"
 
 module sample {
 
 struct Bar {
@@ skipping 16 matching lines @@
   int32 y @1;
   bool a = true @2;
   bool b @3;
   bool c @4;
   Bar bar @5;
   Bar[] extra_bars @7;
   uint8[] data = [1,2,3] @6;
   handle<message_pipe> source @9;
   handle<data_pipe_consumer>[] input_streams @10;
   handle<data_pipe_producer>[] output_streams @11;
+  bool[][] array_of_array_of_bools @12;
 };
 
 struct DefaultsTestInner {
   int32 age @2;
   string[] names = ["Jim"] @1;
   int32 height = 6*12 @3;
 };
 
 struct DefaultsTest {
   sample.DefaultsTestInner[] people = [{32, ["Bob", "Bobby"]}] @1;
@@ skipping 18 matching lines @@
   DidFrobinate@0(int32 result @0);
 };
 
 // This interface is referenced above where it is defined. It also refers to
 // itself from a method.
 interface Port {
   PostMessage@0(string message_text @0, Port[] extra_ports@1);
 };
 
 }