Embed a simple Mojo shell in content

components/proxy_resolver.gypi

+# Copyright 2015 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.
+
+{
+  'variables': {
+    'chromium_code': 1,
+  },
+  # GN version: //components/proxy_resolver:app
+  'targets': [{
+    'target_name': 'proxy_resolver_app',
+    'type': 'static_library',
+    'dependencies': [
+      '<(DEPTH)/base/base.gyp:base',
+      '<(DEPTH)/net/net.gyp:net_interfaces',
+      '<(DEPTH)/net/net.gyp:net_utility_services',
+      '<(DEPTH)/third_party/mojo/mojo_public.gyp:mojo_application_base',
+    ],
+    'sources': [
+      'proxy_resolver/proxy_resolver_app.cc',
+      'proxy_resolver/proxy_resolver_app.h',
+    ],
+  }],
+}