Create the mojo user/group

mojo_shell will run as the mojo user, in the mojo group.

BUG=chromium:407785
TEST=none

Change-Id: I83ad78dc47012889cbae98de184afc0071097058
Reviewed-on: https://chromium-review.googlesource.com/231670
Commit-Queue: Chris Masone <cmasone@chromium.org>
Tested-by: Chris Masone <cmasone@chromium.org>
Reviewed-by: David Zeuthen <zeuthen@chromium.org>
diff --git a/profiles/base/accounts/group/mojo b/profiles/base/accounts/group/mojo
new file mode 100644
index 0000000..17f642a
--- /dev/null
+++ b/profiles/base/accounts/group/mojo
@@ -0,0 +1,3 @@
+group:mojo
+gid:263
+users:mojo
diff --git a/profiles/base/accounts/user/mojo b/profiles/base/accounts/user/mojo
new file mode 100644
index 0000000..09b1eb9
--- /dev/null
+++ b/profiles/base/accounts/user/mojo
@@ -0,0 +1,6 @@
+user:mojo
+uid:263
+gid:263
+gecos:mojo_shell, the mojo service registrar and matchmaker
+home:/dev/null
+shell:/bin/false