Fix js checker script

Fix js checker script

The previous script update broke the closure compilation for some apps (like
files.app). This fixes the problem by correcting the values passed into
run_js_check.

The problems can be repro'ed by running:
  GYP_GENERATORS=ninja tools/gyp/gyp --depth . ui/file_manager/file_manager/*/js/compiled_resources.gyp && ninja -C out/Default;

After this cl, the above command returns only a single (valid!) error.

BUG=

Committed: https://crrev.com/0b3e2467eabb57cb9630587f4e6ebb139f1224a6
Cr-Commit-Position: refs/heads/master@{#311743}

[garykac, 2015-01-15 18:53:27]

garykac@chromium.org changed reviewers:
+ tbreisacher@chromium.org

[Tyler Breisacher (Chromium), 2015-01-15 20:43:09]

lgtm

https://codereview.chromium.org/853983002/diff/1/third_party/closure_compiler...
File third_party/closure_compiler/checker.py (right):

https://codereview.chromium.org/853983002/diff/1/third_party/closure_compiler...
third_party/closure_compiler/checker.py:243: errors, stderr =
self.run_js_check([self._expanded_file], externs)
run_js_check's first argument is a list of sources, not a single source. So why
wasn't this caught at compile time? Oh right.

/me wanders away grumbling about Python.

[Ben Kwa, 2015-01-15 21:36:50]

The CQ bit was checked by kenobi@chromium.org

[commit-bot: I haz the power, 2015-01-15 21:38:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/853983002/1

[commit-bot: I haz the power, 2015-01-15 21:45:49]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-15 21:46:53]

Patchset 1 (id:??) landed as
https://crrev.com/0b3e2467eabb57cb9630587f4e6ebb139f1224a6
Cr-Commit-Position: refs/heads/master@{#311743}