Make mojo/application:test_support a group target.

mojo/services/network/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("//third_party/mojo/src/mojo/public/mojo_application.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 
   java_library_path = "$target_out_dir/java_library.dex.jar"
@@ skipping 109 matching lines @@
     "//mojo/application:test_support",
     "//mojo/common",
     "//mojo/services/network/public/cpp",
     "//mojo/services/network/public/interfaces",
     "//net",
     "//net:test_support",
     "//testing/gtest",
     "//third_party/mojo/src/mojo/public/cpp/bindings",
     "//third_party/mojo/src/mojo/public/cpp/bindings:callback",
   ]
-
-  # TODO(msw): Move this to mojo/application:test_support; see crbug.com/477104.
-  data_deps = []
-  if (is_android) {
-    data_deps += [ "//mojo/android" ]
-  }
-  if (!is_component_build) {
-    data_deps += [ "//mojo/shell:mojo_shell" ]
-  }
 }