update git-cl for OWNERS file support via .git/hooks/pre-cl-*

git_cl/test/git-cl-test-hook

+#!/usr/bin/python
+# Copyright (c) 2009 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 optparse
+import os
+import sys
+from subprocess import Popen, PIPE
+
+# Try locating depot_tools from the user's PATH.
+depot_tools_path = None
+
+# First parse PATH if there's a "depot_tools" inside
+for path in os.environ.get("PATH").split(os.pathsep):
+  if not path.endswith("depot_tools") and not path.endswith("depot_tools/"):
+    continue
+  depot_tools_path = path
+  break
+
+# If depot_tools dir is not called depot_tools, or other weirdness
+if not depot_tools_path:
+  # Grab a `which gclient', which gives first match
+  # `which' also uses PATH, but is not restricted to specific directory name
+  path = Popen(["which", "gclient"], stdout=PIPE).communicate()[0].strip()
+  if path:
+    depot_tools_path = path.replace("/gclient","")
+
+# If we found depot_tools, add it to the script's import path.
+# Use realpath to normalize the actual path
+if depot_tools_path:
+  sys.path.insert(0, os.path.realpath(depot_tools_path))
+else:
+  print "ERROR: Could not find depot_tools in your PATH."
+  print "ERROR: Please add it to your PATH and try again."
+  sys.exit(1)
+
+# Try importing git_cl_hooks from depot_tools.
+try:
+  import git_cl_hooks
+except ImportError:
+  print "ERROR: Could not import git_cl_hooks from depot_tools in your PATH."
+  print "ERROR: Make sure %s is up-to-date and try again." % depot_tools_path
+  sys.exit(1)
+
+parser = optparse.OptionParser()
+parser.set_usage('%prog [options] <upstream-branch>')
+parser.add_option('--tbr', action='store_true', default=False,
+                  help='skip checks for reviewers, owners')
+parser.add_option('--host-url', default=None,
+                  help='scheme, origin, and port for Rietveld server')
+options, args = parser.parse_args()
+if len(args) != 1:
+    parser.print_help()
+    sys.exit(1)
+
+# Run the hooks library with our arguments.
+exec git_cl_hooks.RunHooks(hook_name=parser.get_prog_name(),
+                           upstream_branch=args[0],
+                           cmd_line_options=options)