Support custom message filtering on Mojo binding objects

mojo/public/interfaces/bindings/tests/BUILD.gn

 # 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.
 
 import("../../../tools/bindings/mojom.gni")
 
 mojom("test_interfaces") {
   testonly = true
   sources = [
     "math_calculator.mojom",
@@ skipping 84 matching lines @@
 }
 
 mojom("test_associated_interfaces") {
   # These files are not included in the test_interfaces target because
   # associated interfaces are not supported by all bindings languages yet.
   testonly = true
   sources = [
     "test_associated_interfaces.mojom",
     "validation_test_associated_interfaces.mojom",
   ]
+
+  public_deps = [
+    ":test_interfaces",
+  ]
 }
 
 mojom("versioning_test_service_interfaces") {
   testonly = true
   sources = [
     "versioning_test_service.mojom",
   ]
 }
 
 mojom("versioning_test_client_interfaces") {
@@ skipping 11 matching lines @@
   ]
 }
 
 mojom("test_no_sources") {
   testonly = true
 
   public_deps = [
     ":test_interfaces",
   ]
 }