Split targets with external dependencies out of mojo_public.gypi

mojo/mojo.gyp

 # 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.
 
 {
   'target_defaults': {
     'conditions': [
       ['mojo_shell_debug_url != ""', {
         'defines': [
           'MOJO_SHELL_DEBUG=1',
@@ skipping 33 matching lines @@
       }, {
         'mojo_system_for_component': "mojo_none",
         'mojo_system_for_loadable_module': "mojo_system",
       }],
     ],
   },
   'includes': [
     'mojo_apps.gypi',
     'mojo_examples.gypi',
     'mojo_public.gypi',
+    'mojo_public_tests.gypi',
     'mojo_services.gypi',
   ],
   'targets': [
     {
       'target_name': 'mojo',
       'type': 'none',
       'dependencies': [
         'mojo_apps_js_unittests',
         'mojo_compositor_app',
         'mojo_common_lib',
@@ skipping 977 matching lines @@
             'views/views_init_internal.h',
           ],
           'defines': [
             'MOJO_VIEWS_IMPLEMENTATION',
           ],
         },
       ],
     }],
   ],
 }