Add --with_tags to enable git tag fetching.

gclient_scm.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Gclient-specific SCM-specific operations."""
 
 from __future__ import print_function
 
 import errno
 import logging
@@ skipping 767 matching lines @@
         'refs': []
     }
     # TODO(hinoka): This currently just fails because lkcr/lkgr are branches
     #               not tags. This also adds 20 seconds to every bot_update
     #               run, so I'm commenting this out until lkcr/lkgr become
     #               tags.  (2014/4/24)
     # if url == CHROMIUM_SRC_URL or url + '.git' == CHROMIUM_SRC_URL:
     #  mirror_kwargs['refs'].extend(['refs/tags/lkgr', 'refs/tags/lkcr'])
     if hasattr(options, 'with_branch_heads') and options.with_branch_heads:
       mirror_kwargs['refs'].append('refs/branch-heads/*')
+    if hasattr(options, 'with_tags') and options.with_tags:
+      mirror_kwargs['refs'].append('refs/tags/*')
     return git_cache.Mirror(url, **mirror_kwargs)
 
   @staticmethod
   def _UpdateMirror(mirror, options):
     """Update a git mirror by fetching the latest commits from the remote."""
     if options.shallow:
       # HACK(hinoka): These repositories should be super shallow.
       if 'flash' in mirror.url:
         depth = 10
       else:
@@ skipping 270 matching lines @@
     if options.verbose:
       fetch_cmd.append('--verbose')
     elif quiet:
       fetch_cmd.append('--quiet')
     self._Run(fetch_cmd, options, show_header=options.verbose, retry=True)
 
     # Return the revision that was fetched; this will be stored in 'FETCH_HEAD'
     return self._Capture(['rev-parse', '--verify', 'FETCH_HEAD'])
 
   def _UpdateBranchHeads(self, options, fetch=False):
-    """Adds, and optionally fetches, "branch-heads" refspecs if requested."""
+    """Adds, and optionally fetches, "branch-heads" and "tags" refspecs
+    if requested."""
+    need_fetch = fetch
     if hasattr(options, 'with_branch_heads') and options.with_branch_heads:
       config_cmd = ['config', 'remote.%s.fetch' % self.remote,
                     '+refs/branch-heads/*:refs/remotes/branch-heads/*',
                     '^\\+refs/branch-heads/\\*:.*$']
       self._Run(config_cmd, options)
-      if fetch:
-        self._Fetch(options)
+      need_fetch = True
+    if hasattr(options, 'with_tags') and options.with_tags:
+      config_cmd = ['config', 'remote.%s.fetch' % self.remote,
+                    '+refs/tags/*:refs/tags/*',
+                    '^\\+refs/tags/\\*:.*$']
+      self._Run(config_cmd, options)
+      need_fetch = True
+    if fetch and need_fetch:
+      self._Fetch(options)
 
   def _Run(self, args, options, show_header=True, **kwargs):
     # Disable 'unused options' warning | pylint: disable=W0613
     cwd = kwargs.setdefault('cwd', self.checkout_path)
     kwargs.setdefault('stdout', self.out_fh)
     kwargs['filter_fn'] = self.filter
     kwargs.setdefault('print_stdout', False)
     env = scm.GIT.ApplyEnvVars(kwargs)
     cmd = ['git'] + args
     if show_header:
@@ skipping 464 matching lines @@
       new_command.append('--force')
       if command[0] != 'checkout' and scm.SVN.AssertVersion('1.6')[0]:
         new_command.extend(('--accept', 'theirs-conflict'))
     elif options.manually_grab_svn_rev:
       new_command.append('--force')
       if command[0] != 'checkout' and scm.SVN.AssertVersion('1.6')[0]:
         new_command.extend(('--accept', 'postpone'))
     elif command[0] != 'checkout' and scm.SVN.AssertVersion('1.6')[0]:
       new_command.extend(('--accept', 'postpone'))
     return new_command