Revert 186598 ("Add option to automatically fetch git "branch-heads".")

Some SVN-only trybots get errors when running gclient revert with this
change. I assume it's because the flag is not present for the gclient
revert command, and that the code checking if options.with_branch_heads
is set is common to both revert and sync.

BUG=none
TEST=reverted locally and gclient revert worked again.

Review URL: https://chromiumcodereview.appspot.com/12616006

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@186967 0039d316-1c4b-4281-b951-d872f2087c98

gclient.py

@@ -1476,10 +1476,6 @@ def CMDsync(parser, args):
                          'has multiple solutions configured and will work even '
                          'if the src@ part is skipped. Note that specifying '
                          '--revision means your safesync_url gets ignored.')
-  parser.add_option('--with_branch_heads', action='store_true',
-                    help='Clone git "branch_heads" refspecs in addition to '
-                         'the default refspecs. This adds about 1/2GB to a '
-                         'full checkout. (git only)')
   parser.add_option('-t', '--transitive', action='store_true',
                     help='When a revision is specified (in the DEPS file or '
                           'with the command-line flag), transitively update '

gclient_scm.py

@@ -655,9 +655,6 @@ class GitWrapper(SCMWrapper):
       detach_head = True
     if options.verbose:
       clone_cmd.append('--verbose')
-    if options.with_branch_heads:
-      clone_cmd.extend(['--config', 'remote.origin.fetch=+refs/branch-heads/*:'
-                        'refs/remotes/branch-heads/*'])
     clone_cmd.extend([url, self.checkout_path])
 
     # If the parent directory does not exist, Git clone on Windows will not
@@ -680,14 +677,6 @@ class GitWrapper(SCMWrapper):
       try:
         self._Run(clone_cmd, options, cwd=self._root_dir, filter_fn=_GitFilter,
                   print_stdout=False)
-        # Update the "branch-heads" remote-tracking branches, since clone
-        # doesn't automatically fetch those, and we might need it to checkout a
-        # specific revision below.
-        if options.with_branch_heads:
-          fetch_cmd = ['fetch', 'origin']
-          if options.verbose:
-            fetch_cmd.append('--verbose')
-          self._Run(fetch_cmd, options)
         break
       except subprocess2.CalledProcessError, e:
         # Too bad we don't have access to the actual output yet.