Change "ldap" to "username".

Change-Id: Ic993758ea901d039c5fdac978e516ba20f95005d
Reviewed-on: https://chromium-review.googlesource.com/830611
Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/git_cl.py b/git_cl.py
index 2b08e33..6782533 100755
--- a/git_cl.py
+++ b/git_cl.py
@@ -3883,8 +3883,8 @@
 
   @staticmethod
   def _parse_identity(identity):
-    """Parses identity "git-<ldap>.example.com" into <ldap> and domain."""
-    # Special case: users whose ldaps contain ".", which are generally not
+    """Parses identity "git-<username>.domain" into <username> and domain."""
+    # Special case: usernames that contain ".", which are generally not
     # distinguishable from sub-domains. But we do know typical domains:
     if identity.endswith('.chromium.org'):
       domain = 'chromium.org'