Add an option to disable adding CC emails automatically

R=ehmaldonado@chromium.org, machenbach@chromium.org

Bug: 878303
Change-Id: Ia90001025babe692e481eb74fdbb4a66ce9a22f8
Reviewed-on: https://chromium-review.googlesource.com/1230074
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>

git_cl.py

@@ -2261,13 +2261,14 @@ class _RietveldChangelistImpl(_ChangelistCodereviewBase):
           DieWithError("Must specify reviewers to send email.", change_desc)
         upload_args.append('--send_mail')
 
-      # We check this before applying rietveld.private assuming that in
-      # rietveld.cc only addresses which we can send private CLs to are listed
-      # if rietveld.private is set, and so we should ignore rietveld.cc only
-      # when --private is specified explicitly on the command line.
-      if options.private:
-        logging.warn('rietveld.cc is ignored since private flag is specified.  '
-                     'You need to review and add them manually if necessary.')
+      # We only skip auto-CC-ing addresses from rietveld.cc when --private or
+      # --no-autocc is explicitly specified on the command line. Should private
+      # CL be created due to rietveld.private value, we assume that rietveld.cc
+      # only contains addresses where private CLs are allowed to be sent.
+      if options.private or options.no_autocc:
+        logging.warn('rietveld.cc is ignored since private/no-autocc flag is '
+                     'specified. You need to review and add them manually if '
+                     'necessary.')
         cc = self.GetCCListWithoutDefault()
       else:
         cc = self.GetCCList()
@@ -5094,9 +5095,12 @@ def CMDupload(parser, args):
                     help='Run all tests specified by input_api.RunTests in all '
                          'PRESUBMIT files in parallel.')
 
-  # TODO: remove Rietveld flags
+  parser.add_option('--no-autocc', action='store_true',
+                    help='Disables automatic addition of CC emails')
   parser.add_option('--private', action='store_true',
-                    help='set the review private (rietveld only)')
+                    help='Set the review private. This implies --no-autocc.')
+
+  # TODO: remove Rietveld flags
   parser.add_option('--email', default=None,
                     help='email address to use to connect to Rietveld')
 

tests/git_cl_test.py

@@ -765,9 +765,9 @@ class TestGitCl(TestCase):
             ((['git', 'config', 'gerrit.host'],), 'True' if gerrit else '')]
 
   @classmethod
-  def _upload_calls(cls, private):
+  def _upload_calls(cls, private, no_autocc):
     return (cls._rietveld_git_base_calls() +
-            cls._git_upload_calls(private))
+            cls._git_upload_calls(private, no_autocc))
 
   @classmethod
   def _rietveld_upload_no_rev_calls(cls):
@@ -809,12 +809,15 @@ class TestGitCl(TestCase):
     ]
 
   @classmethod
-  def _git_upload_calls(cls, private):
-    if private:
+  def _git_upload_calls(cls, private, no_autocc):
+    if private or no_autocc:
       cc_call = []
-      private_call = []
     else:
       cc_call = [((['git', 'config', 'rietveld.cc'],), '')]
+
+    if private:
+      private_call = []
+    else:
       private_call = [
           ((['git', 'config', 'rietveld.private'],), '')]
 
@@ -887,15 +890,15 @@ class TestGitCl(TestCase):
       returned_description,
       final_description,
       reviewers,
-      private=False,
       cc=None):
     """Generic reviewer test framework."""
     self.mock(git_cl.sys, 'stdout', StringIO.StringIO())
 
     private = '--private' in upload_args
     cc = cc or []
+    no_autocc = '--no-autocc' in upload_args
 
-    self.calls = self._upload_calls(private)
+    self.calls = self._upload_calls(private, no_autocc)
 
     def RunEditor(desc, _, **kwargs):
       self.assertEquals(
@@ -933,6 +936,14 @@ class TestGitCl(TestCase):
         'desc\n\nBUG=',
         [])
 
+  def test_no_autocc(self):
+    self._run_reviewer_test(
+        ['--no-autocc'],
+        'desc\n\nBUG=',
+        '# Blah blah comment.\ndesc\n\nBUG=\n',
+        'desc\n\nBUG=',
+        [])
+
   def test_reviewers_cmd_line(self):
     # Reviewer is passed as-is
     description = 'desc\n\nR=foo@example.com\nBUG='