Adds method ordinal off-by-one error detection testing to ValidationTest.

mojo/public/interfaces/bindings/tests/validation_test_interfaces.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.
 
 
 [JavaPackage="org.chromium.mojo.bindings.test.mojom.mojo"]
 module mojo.test;
 
 struct StructA {
   uint64 i;
@@ skipping 23 matching lines @@
 struct StructG {
   int32 i;
   [MinVersion=1]
   StructA? struct_a;
   [MinVersion=3]
   string? str;
   [MinVersion=3]
   bool b;
 };
 
+// This interface is used for testing bounds-checking in the mojom
+// binding code. If you add a method please update the files
+// ./data/validation/boundscheck_*. If you add a response please update
+// ./data/validation/resp_boundscheck_*.
+interface BoundsCheckTestInterface {
+  Method0(uint8 param0) => (uint8 param0);
+  Method1(uint8 param0);
+};
+
 interface ConformanceTestInterface {
   Method0(float param0);
   Method1(StructA param0);
   Method2(StructB param0, StructA param1);
   Method3(array<bool> param0);
   Method4(StructC param0, array<uint8> param1);
   Method5(StructE param0, handle<data_pipe_producer> param1);
   Method6(array<array<uint8>> param0);
   Method7(StructF param0, array<array<uint8, 3>?, 2> param1);
   Method8(array<array<string>?> param0);
   Method9(array<array<handle?>>? param0);
   Method10(map<string, uint8> param0);
   Method11(StructG param0);
   Method12(float param0) => (float param0);
 };
 
 struct BasicStruct {
   int32 a;
 };
 
 interface IntegrationTestInterface {
   Method0(BasicStruct param0) => (array<uint8> param0);
 };