Try to unbreak gyp build-only bots after https://codereview.chromium.org/1918143004/

build/gn_migration.gypi

 # Copyright (c) 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.
 
 # This file defines five targets that we are using to track the progress of the
 # GYP->GN migration:
 #
 # 'both_gn_and_gyp' lists what GN is currently capable of building and should
 # match the 'both_gn_and_gyp' target in //BUILD.gn.
 #
@@ skipping 624 matching lines @@
               ],
             }],
             ['OS!="android"', {
               'dependencies': [
                 '../ipc/ipc.gyp:ipc_tests_run',
                 '../ui/base/ui_base_tests.gyp:ui_base_unittests_run',
                 '../ui/gl/gl_tests.gyp:gl_unittests_run',
                 '../ui/touch_selection/ui_touch_selection.gyp:ui_touch_selection_unittests_run',
               ],
             }],
+            ['OS!="android" and OS!="ios" and chromecast==0', {
+              'dependencies': [
+                '../ipc/mojo/ipc_mojo.gyp:ipc_mojo_unittests_run',
+                '../mojo/mojo_edk_tests.gyp:mojo_js_unittests_run',
+                '../mojo/mojo_edk_tests.gyp:mojo_js_integration_tests_run',
+                '../mojo/mojo_edk_tests.gyp:mojo_system_unittests_run',
+                '../services/shell/shell.gyp:mojo_shell_unittests_run',
+              ],
+            }],
             ['use_ash==1', {
               'dependencies': [
                 '../ash/ash.gyp:ash_unittests_run',
               ],
             }],
             ['use_aura==1', {
               'dependencies': [
                 '../ui/app_list/presenter/app_list_presenter.gyp:app_list_presenter_unittests_run',
                 '../ui/aura/aura.gyp:aura_unittests_run',
                 '../ui/wm/wm.gyp:wm_unittests_run',
@@ skipping 110 matching lines @@
         }],
         ['OS=="android" and target_arch != "x64"', {
           'dependencies': [
             '../third_party/android_platform/relocation_packer.gyp:android_relocation_packer_unittests#host'
           ],
         }],
       ],
     },
   ]
 }