Revert of Add src-side launcher for telemetry_unittests

testing/scripts/checkdeps.py

 #!/usr/bin/env python
 # 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
+import tempfile
 
 
-import common
+SCRIPT_DIR = os.path.abspath(os.path.dirname(__file__))
+SRC_DIR = os.path.abspath(
+    os.path.join(SCRIPT_DIR, os.path.pardir, os.path.pardir))
 
 
-def main_run(args):
-  with common.temporary_file() as tempfile_path:
-    rc = common.run_command([
-        os.path.join(common.SRC_DIR, 'buildtools', 'checkdeps', 'checkdeps.py'),
+def run_command(argv):
+  print 'Running %r' % argv
+  rc = subprocess.call(argv)
+  print 'Command %r returned exit code %d' % (argv, rc)
+  return rc
+
+
+@contextlib.contextmanager
+def temporary_file():
+  fd, path = tempfile.mkstemp()
+  os.close(fd)
+  try:
+    yield path
+  finally:
+    os.remove(path)
+
+
+def mode_run(args):
+  with temporary_file() as tempfile_path:
+    rc = run_command([
+        os.path.join(SRC_DIR, 'buildtools', 'checkdeps', 'checkdeps.py'),
         '--json', tempfile_path
     ])
 
     with open(tempfile_path) as f:
       checkdeps_results = json.load(f)
 
   result_set = set()
   for result in checkdeps_results:
     for violation in result['violations']:
       result_set.add((result['dependee_path'], violation['include_path']))
 
-  json.dump({
-      'valid': True,
-      'failures': ['%s: %s' % (r[0], r[1]) for r in result_set],
-  }, args.output)
+  with open(args.output, 'w') as f:
+    json.dump({
+        'valid': True,
+        'failures': ['%s: %s' % (r[0], r[1]) for r in result_set],
+    }, f)
 
   return rc
 
 
-def main_compile_targets(args):
-  json.dump([], args.output)
+def main(argv):
+  parser = argparse.ArgumentParser()
+
+  subparsers = parser.add_subparsers()
+
+  run_parser = subparsers.add_parser('run')
+  run_parser.add_argument('--output', required=True)
+  run_parser.set_defaults(func=mode_run)
+
+  args = parser.parse_args(argv)
+  return args.func(args)
 
 
 if __name__ == '__main__':
-  funcs = {
-    'run': main_run,
-    'compile_targets': main_compile_targets,
-  }
-  sys.exit(common.run_script(sys.argv[1:], funcs))
+  sys.exit(main(sys.argv[1:]))