Revert of Add CC_LIST and --cc to Gerrit issues via API to be similar to CCs in Rietveld (patchset #4 id:60001 of https://codereview.chromium.org/2378703002/ )

Reason for revert:
Actually, it doesn't break uploads, add cc-ed emails post-upload fails with exception and confuses users, and I couldn't find workaround.

Original issue's description:
> Add CC_LIST and --cc to Gerrit issues via API to be similar to CCs in Rietveld
>
> BUG=chromium:649660
>
> Committed: 3574740929

TBR=rmistry@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:649660

Review-Url: https://codereview.chromium.org/2375393002

gerrit_util.py

@@ -613,7 +613,7 @@ def GetReview(host, change, revision):
   return ReadHttpJsonResponse(CreateHttpConn(host, path))
 
 
-def AddReviewers(host, change, add=None, is_reviewer=True):
+def AddReviewers(host, change, add=None):
   """Add reviewers to a change."""
   if not add:
     return
@@ -621,10 +621,7 @@ def AddReviewers(host, change, add=None, is_reviewer=True):
     add = (add,)
   path = 'changes/%s/reviewers' % change
   for r in add:
-    body = {
-      'reviewer': r,
-      'state': 'REVIEWER' if is_reviewer else 'CC',
-    }
+    body = {'reviewer': r}
     conn = CreateHttpConn(host, path, reqtype='POST', body=body)
     jmsg = ReadHttpJsonResponse(conn, ignore_404=False)
   return jmsg

git_cl.py

@@ -2618,6 +2618,13 @@ class _GerritChangelistImpl(_ChangelistCodereviewBase):
     else:
       refspec_opts.append('notify=NONE')
 
+    cc = self.GetCCList().split(',')
+    if options.cc:
+      cc.extend(options.cc)
+    cc = filter(None, cc)
+    if cc:
+      refspec_opts.extend('cc=' + email.strip() for email in cc)
+
     reviewers = change_desc.get_reviewers()
     if reviewers:
       refspec_opts.extend('r=' + email.strip() for email in reviewers)
@@ -2655,16 +2662,6 @@ class _GerritChangelistImpl(_ChangelistCodereviewBase):
            'Change-Id: %s') % (len(change_numbers), change_id))
       self.SetIssue(change_numbers[0])
       self._GitSetBranchConfigValue('gerritsquashhash', ref_to_push)
-
-    # Add cc's from the CC_LIST and --cc flag (if any).
-    cc = self.GetCCList().split(',')
-    if options.cc:
-      cc.extend(options.cc)
-    cc = filter(None, cc)
-    if cc:
-      gerrit_util.AddReviewers(
-          self._GetGerritHost(), self.GetIssue(), cc, is_reviewer=False)
-
     return 0
 
   def _AddChangeIdToCommitMessage(self, options, args):

tests/git_cl_test.py

@@ -884,6 +884,7 @@ class TestGitCl(TestCase):
     calls += [
         ((['git', 'rev-list',
             expected_upstream_ref + '..' + ref_to_push],), ''),
+        ((['git', 'config', 'rietveld.cc'],), '')
         ]
 
     notify_suffix = 'notify=%s' % ('ALL' if notify else 'NONE')
@@ -892,6 +893,9 @@ class TestGitCl(TestCase):
     else:
       ref_suffix = '%' + notify_suffix
 
+    # Add cc from watch list.
+    ref_suffix += ',cc=joe@example.com'
+
     if reviewers:
       ref_suffix += ',' + ','.join('r=%s' % email
                                    for email in sorted(reviewers))
@@ -921,12 +925,6 @@ class TestGitCl(TestCase):
           ((['git', 'config', 'branch.master.gerritsquashhash',
              'abcdef0123456789'],), ''),
       ]
-    calls += [
-        ((['git', 'config', 'rietveld.cc'],), ''),
-        ((['AddReviewers', 'chromium-review.googlesource.com',
-           123456 if squash else None,
-          ['joe@example.com'], False],), ''),
-    ]
     calls += cls._git_post_upload_calls()
     return calls
 
@@ -960,9 +958,6 @@ class TestGitCl(TestCase):
     self.mock(git_cl.gclient_utils, 'RunEditor',
               lambda *_, **__: self._mocked_call(['RunEditor']))
     self.mock(git_cl, 'DownloadGerritHook', self._mocked_call)
-    self.mock(git_cl.gerrit_util, 'AddReviewers',
-              lambda h, i, add, is_reviewer: self._mocked_call(
-                  ['AddReviewers', h, i, add, is_reviewer]))
 
     self.calls = self._gerrit_base_calls(issue=issue)
     self.calls += self._gerrit_upload_calls(