Fix the argument passed to main() in clang_format.py

Fix the argument passed to main() in clang_format.py

Passing arg[1] rather than argv[1:] is causing the following with
Python 2.7.3.

Traceback (most recent call last):
File "/home/tfarina/depot_tools/clang_format.py", line 70, in
<module>
sys.exit(main(sys.argv[1]))
File "/home/tfarina/depot_tools/clang_format.py", line 65,
in main
return subprocess.call([tool] + args)
TypeError: can only concatenate list (not "str") to list
No output from clang-format (crashed?).
Please report to bugs.llvm.org.

This started to happening after
http://src.chromium.org/viewvc/chrome?view=rev&revision=294250

BUG=None
TEST=try to format a c++ file using clang-format
TBR=sbc@chromium.org,maruel@chromium.org

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=294267

[tfarina, 2015-02-28 19:07:24]

TBRing...

[tfarina, 2015-02-28 19:07:36]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2015-02-28 19:08:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/972453002/1

[commit-bot: I haz the power, 2015-02-28 19:12:05]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-02-28 19:12:05]

Presubmit check for 972453002-1 failed and returned exit status 1.

Running presubmit commit checks ...
Checking out rietveld...
Running save-description-on-failure.sh
Running push-basic.sh
Running upstream.sh
Running submit-from-new-dir.sh
Running abandon.sh
Running submodule-merge-test.sh
Running upload-local-tracking-branch.sh
Running hooks.sh
Running post-dcommit-hook-test.sh
Running upload-stale.sh
Running patch.sh
Running basic.sh

** Presubmit Messages **
--tbr was specified, skipping OWNERS check

** Presubmit ERRORS **
tests/gclient_test.py (0.56s) failed
........
foo (ERROR)
----------------------------------------
[0:00:00] Started.
----------------------------------------
.
foo (ERROR)
----------------------------------------
[0:00:00] Started.
----------------------------------------
.....F.........
======================================================================
FAIL: testRecursedepsOverride (__main__.GclientTest)
Verifies gclient respects the |recursedeps| var syntax.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tests/gclient_test.py", line 721, in testRecursedepsOverride
    self._get_processed())
AssertionError: Lists differ: ['svn://example.com/foo', 'svn... !=
['svn://example.com/foo', 'svn...

First differing element 1:
svn://example.com/bar
svn://example.com/tar

  ['svn://example.com/foo',
+  'svn://example.com/tar',
   'svn://example.com/bar',
-  'svn://example.com/tar',
   'svn://example.com/foo/bar',
   'svn://example.com/foo/bar/baz',
   'svn://example.com/foo/bar/baz/fizz']

----------------------------------------------------------------------
Ran 24 tests in 0.197s

FAILED (failures=1)


tests/gclient_smoketest.py (55.92s) failed
Ffatal: reference is not a tree: 0ff4621971b217ac9fc263827f794205a1aa6f1f
EE..............................................
======================================================================
ERROR: testBlinkDEPSChangeUsingGit (__main__.BlinkDEPSTransitionSmokeTest)
Like testBlinkDEPSChangeUsingGclient, but move the main project using
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tests/gclient_smoketest.py", line 1630, in testBlinkDEPSChangeUsingGit
    cwd=self.checkout_path)
  File
"/b/infra_internal/commit_queue/workdir/tools/depot_tools/subprocess2.py", line
484, in check_call
    check_call_out(args, **kwargs)
  File
"/b/infra_internal/commit_queue/workdir/tools/depot_tools/subprocess2.py", line
478, in check_call_out
    returncode, args, kwargs.get('cwd'), out[0], out[1])
CalledProcessError: Command git checkout -q
0ff4621971b217ac9fc263827f794205a1aa6f1f returned non-zero exit status 128 in
/tmp/trial0yaZyY/__main__.BlinkDEPSTransitionSmokeTest.testBlinkDEPSChangeUsingGit/src

======================================================================
ERROR: testBlinkLocalBranchesArePreserved
(__main__.BlinkDEPSTransitionSmokeTest)
Checks that the state of local git branches are effectively preserved
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tests/gclient_smoketest.py", line 1656, in
testBlinkLocalBranchesArePreserved
    self.CheckStatusPreMergePoint()
  File "tests/gclient_smoketest.py", line 1558, in CheckStatusPreMergePoint
    self.blink), self.blink_git_url)
  File "/b/infra_internal/commit_queue/workdir/tools/depot_tools/scm.py", line
121, in Capture
    cwd=cwd, stderr=subprocess2.PIPE, env=env, **kwargs)
  File
"/b/infra_internal/commit_queue/workdir/tools/depot_tools/subprocess2.py", line
515, in check_output
    return check_call_out(args, stdout=PIPE, **kwargs)[0]
  File
"/b/infra_internal/commit_queue/workdir/tools/depot_tools/subprocess2.py", line
475, in check_call_out
    out, returncode = communicate(args, **kwargs)
  File
"/b/infra_internal/commit_queue/workdir/tools/depot_tools/subprocess2.py", line
449, in communicate
    proc = Popen(args, **kwargs)
  File
"/b/infra_internal/commit_queue/workdir/tools/depot_tools/subprocess2.py", line
253, in __init__
    % (str(e), kwargs.get('cwd'), args[0]))
OSError: Execution failed with error: [Errno 2] No such file or directory:
'/tmp/trial0yaZyY/__main__.BlinkDEPSTransitionSmokeTest.testBlinkLocalBranchesArePreserved/src/third_party/WebKit'.
Check that
/tmp/trial0yaZyY/__main__.BlinkDEPSTransitionSmokeTest.testBlinkLocalBranchesArePreserved/src/third_party/WebKit
or git exist and have execution permission.

======================================================================
FAIL: testBlinkDEPSChangeUsingGclient (__main__.BlinkDEPSTransitionSmokeTest)
Checks that {src,blink} repos are consistent when syncing going back and
----------------------------------------------------------------------
Traceback (most recent call last):
  File "tests/gclient_smoketest.py", line 1601, in
testBlinkDEPSChangeUsingGclient
    self.assertEqual(res[2], 0, 'DEPS change sync failed.')
AssertionError: DEPS change sync failed.

----------------------------------------------------------------------
Ran 49 tests in 55.710s

FAILED (failures=1, errors=2)


Presubmit checks took 217.1s to calculate.

[tfarina, 2015-02-28 19:16:44]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2015-02-28 19:17:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/972453002/1

[commit-bot: I haz the power, 2015-02-28 19:20:25]

Committed patchset #1 (id:1) as
http://src.chromium.org/viewvc/chrome?view=rev&revision=294267