Gerrit git cl desc: don't notify reviwers.

R=agable@chromium.org
BUG=644101
TEST=manual

Change-Id: I82b7209981a834c8f26d65d2701d665a4eb2ba51
Reviewed-on: https://chromium-review.googlesource.com/415829Reviewed-by: Aaron Gable <agable@chromium.org>

gerrit_util.py

@@ -600,8 +600,9 @@ def DeletePendingChangeEdit(host, change):
       raise
 
 
-def SetCommitMessage(host, change, description):
+def SetCommitMessage(host, change, description, notify='ALL'):
   """Updates a commit message."""
+  assert notify in ('ALL', 'NONE')
   # First, edit the commit message in a draft.
   path = 'changes/%s/edit:message' % change
   body = {'message': description}
@@ -619,7 +620,7 @@ def SetCommitMessage(host, change, description):
 
   # And then publish it.
   path = 'changes/%s/edit:publish' % change
-  conn = CreateHttpConn(host, path, reqtype='POST', body={})
+  conn = CreateHttpConn(host, path, reqtype='POST', body={'notify': notify})
   try:
     ReadHttpResponse(conn, ignore_404=False)
   except GerritError as e:

git_cl.py

@@ -2480,7 +2480,7 @@ class _GerritChangelistImpl(_ChangelistCodereviewBase):
       gerrit_util.DeletePendingChangeEdit(self._GetGerritHost(),
                                           self.GetIssue())
     gerrit_util.SetCommitMessage(self._GetGerritHost(), self.GetIssue(),
-                                 description)
+                                 description, notify='NONE')
 
   def CloseIssue(self):
     gerrit_util.AbandonChange(self._GetGerritHost(), self.GetIssue(), msg='')