Mojo: Add warning of invalid serialization results (in debug build).

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

Index: mojo/public/interfaces/bindings/tests/serialization_test_structs.mojom
diff --git a/mojo/public/interfaces/bindings/tests/serialization_test_structs.mojom b/mojo/public/interfaces/bindings/tests/serialization_test_structs.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..f679eeb3a844abf2b1e4f0401978fc01126e948f
--- /dev/null
+++ b/mojo/public/interfaces/bindings/tests/serialization_test_structs.mojom
@@ -0,0 +1,30 @@
+// 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.
+
+[JavaPackage="org.chromium.mojo.bindings.test.mojom.serialization_test_structs"]
+module mojo.test {
+
+struct Struct1 {};
+
+struct Struct2 {
+  handle hdl;
+};
+
+struct Struct3 {
+  Struct1 a;
+};
+
+struct Struct4 {
+  Struct1[] a_array;
+};
+
+struct Struct5 {
+  Struct1[2] a_pair;
+};
+
+struct Struct6 {
+  string str;
+};
+
+}