mojo: terminate apps if the shell goes away

mojo/mojo_public.gypi

Index: mojo/mojo_public.gypi
diff --git a/mojo/mojo_public.gypi b/mojo/mojo_public.gypi
index 63c46923751518d4cd766f10245cc050a56284d9..60df5530c0d61a7164658f5a22ba8bda5f757e62 100644
--- a/mojo/mojo_public.gypi
+++ b/mojo/mojo_public.gypi
@@ -182,7 +182,7 @@
     },
     {
       # GN version: //mojo/public/cpp/application
-      'target_name': 'mojo_application',
+      'target_name': 'mojo_application_base',
       'type': 'static_library',
       'sources': [
         'public/cpp/application/application_connection.h',
@@ -206,6 +206,19 @@
         'mojo_application_bindings',
       ],
     },
+    {
+      'target_name': 'mojo_application_standalone',
+      'type': 'static_library',
+      'sources': [
+        'public/cpp/application/lib/application_impl_standalone.cc',
+      ],
+      'dependencies': [
+        'mojo_application_base',
+      ],
+      'export_dependent_settings': [
+        'mojo_application_base',
+      ],
+    },
   ],
   'conditions': [
     ['OS == "android"', {