Moving mojo/validation test into LayoutTests

mojo/public/js/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.
 
 interfaces_bindings_gen_dir = "$root_gen_dir/mojo/public/interfaces/bindings"
 
 source_set("js") {
   sources = [
     "constants.cc",
     "constants.h",
@@ skipping 20 matching lines @@
 
   deps = [
     "//mojo/public/interfaces/bindings:bindings__generator",
   ]
 }
 
 group("tests") {
   testonly = true
 
   data = [
-    "//mojo/public/interfaces/bindings/tests/data/validation/",
     "tests/core_unittest.js",
-    "tests/validation_test_input_parser.js",
-    "tests/validation_unittest.js",
   ]
 
   public_deps = [
     ":bindings",
   ]
 }