Bug 1607818 - Allow AppShell creation in socket process on Android. r=kmag

In local Android builds the socket process is enabled. However, AppShell
creation is not allowed which causes the process to crash. This syncs the
flags with desktop.

Differential Revision: https://phabricator.services.mozilla.com/D59566

--HG--
extra : moz-landing-system : lando

widget/android/components.conf

@@ -17,6 +17,7 @@ Classes = [
         'contract_ids': ['@mozilla.org/widget/appshell/android;1'],
         'legacy_constructor': 'nsAppShellConstructor',
         'headers': ['/widget/android/nsWidgetFactory.h'],
+        'processes': ProcessSelector.ALLOW_IN_GPU_RDD_VR_AND_SOCKET_PROCESS,
     },
     {
         'cid': '{c401eb80-f9ea-11d3-bb6f-e732b73ebe7c}',