webkit_python_tests: always run from the checkout root

testing/scripts/common.py

 # Copyright 2014 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 argparse
 import contextlib
 import json
 import os
 import subprocess
 import sys
@@ skipping 45 matching lines @@
 
   run_parser = subparsers.add_parser('compile_targets')
   run_parser.add_argument(
       '--output', type=argparse.FileType('w'), required=True)
   run_parser.set_defaults(func=funcs['compile_targets'])
 
   args = parser.parse_args(argv)
   return args.func(args)
 
 
-def run_command(argv, env=None):
-  print 'Running %r' % argv
-  rc = subprocess.call(argv, env=env)
+def run_command(argv, env=None, cwd=None):
+  print 'Running %r in %r (env: %r)' % (argv, cwd, env)
+  rc = subprocess.call(argv, env=env, cwd=cwd)
   print 'Command %r returned exit code %d' % (argv, rc)
   return rc
 
 
 def run_runtest(cmd_args, runtest_args):
   if cmd_args.use_src_side_runtest_py:
     cmd = [
       sys.executable,
       os.path.join(
           cmd_args.paths['checkout'], 'infra', 'scripts', 'runtest_wrapper.py'),
@@ skipping 84 matching lines @@
       [sys.executable, script_to_run] + extra_args)
 
   with open(log_file) as f:
     failures = json.load(f)
   json.dump({
       'valid': integration_test_res == 0,
       'failures': failures,
   }, output)
 
   return integration_test_res