Just use git refs for lkcr and lkgr

recipe_modules/gclient/config.py

 # Copyright 2013 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.
 
 import types
 
 from recipe_engine.config import config_item_context, ConfigGroup, BadConf
 from recipe_engine.config import ConfigList, Dict, Single, Static, Set, List
 
 from . import api as gclient_api
@@ skipping 169 matching lines @@
 def chromium_empty(c):
   c.solutions[0].deps_file = ''  # pragma: no cover
 
 @config_ctx(includes=['chromium_bare'])
 def chromium(c):
   s = c.solutions[0]
   s.custom_deps = mirror_only(c, {})
 
 @config_ctx(includes=['chromium'])
 def chromium_lkcr(c):
-  # TODO(phajdan.jr): Add git hashes for LKCR crbug.com/349277.
-  if c.GIT_MODE:
-    raise BadConf('Git has problems with safesync_url and LKCR, '
-                  'crbug.com/349277 crbug.com/109191')  # pragma: no cover
   s = c.solutions[0]
-  s.safesync_url = 'https://build.chromium.org/p/chromium/lkcr-status/lkgr'
-  # TODO(hinoka): Once lkcr exists and is a tag, it should just be lkcr
-  #               rather than origin/lkcr.
   s.revision = 'origin/lkcr'
 
 @config_ctx(includes=['chromium'])
 def chromium_lkgr(c):
   s = c.solutions[0]
-  safesync_url = 'https://chromium-status.appspot.com/lkgr'
-  if c.GIT_MODE:  # pragma: no cover
-    safesync_url = 'https://chromium-status.appspot.com/git-lkgr'
-    raise BadConf('Git has problems with safesync_url, crbug.com/109191.')
-  s.safesync_url = safesync_url
   s.revision = 'origin/lkgr'
 
 @config_ctx(includes=['chromium_bare'])
 def android_bare(c):
   # We inherit from chromium_bare to get the got_revision mapping.
   # NOTE: We don't set a specific got_revision mapping for src/repo.
   del c.solutions[0]
   c.got_revision_mapping['src'] = 'got_src_revision'
   s = c.solutions.add()
   s.deps_file = '.DEPS.git'
@@ skipping 464 matching lines @@
 def valgrind(c):  # pragma: no cover
   """Add Valgrind binaries to the gclient solution."""
   c.solutions[0].custom_deps['src/third_party/valgrind'] = \
     ChromiumGitURL(c, 'chromium', 'deps', 'valgrind', 'binaries')
 
 @config_ctx(includes=['chromium'])
 def chromedriver(c):
   """Add Selenium Java tests to the gclient solution."""
   c.solutions[0].custom_deps[
       'src/chrome/test/chromedriver/third_party/java_tests'] = (
-          ChromiumGitURL(c, 'chromium', 'deps', 'webdriver'))
+          ChromiumGitURL(c, 'chromium', 'deps', 'webdriver'))