Mojo: Move mojo/public/bindings/tests/*.mojom to mojo/public/interfaces/bindings/tests/.

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 52 matching lines @@
   };
   Frobinate@0(Foo foo @0, BazOptions baz @1, Port port @2);
 };
 
 [Peer=Service]
 interface ServiceClient {
   DidFrobinate@0(int32 result @0);
 };
 
 }