Fix some JS style nits.

Fix some JS style nits.

Replace:

  Array.<
  Object.<

With:

  Array<
  Object<

See bug for rationale (. is no longer required, just extra fluff, looks more like C++, etc.)

TBR=darin@chromium.org
BUG=492476
NOPRESUBMIT=true

Committed: https://crrev.com/79092b25f10925f1cd4a91f1e0472b7697653f27
Cr-Commit-Position: refs/heads/master@{#331603}

[Dan Beam, 2015-05-27 03:43:56]

The CQ bit was checked by dbeam@chromium.org

[commit-bot: I haz the power, 2015-05-27 03:44:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1150173003/1

[commit-bot: I haz the power, 2015-05-27 03:50:33]

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

[commit-bot: I haz the power, 2015-05-27 03:50:35]

Try jobs failed on following builders:
  ios_dbg_simulator_ninja on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)
  ios_rel_device_ninja on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ni...)
  mac_chromium_compile_dbg_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)
  mac_chromium_rel_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[Dan Beam, 2015-05-27 16:45:22]

The CQ bit was checked by dbeam@chromium.org

[commit-bot: I haz the power, 2015-05-27 16:45:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1150173003/20001

[commit-bot: I haz the power, 2015-05-27 16:54:21]

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

[commit-bot: I haz the power, 2015-05-27 16:54:23]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[Dan Beam, 2015-05-27 17:56:24]

The CQ bit was checked by dbeam@chromium.org

[commit-bot: I haz the power, 2015-05-27 17:58:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1150173003/20001

[commit-bot: I haz the power, 2015-05-27 18:02:42]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-05-27 18:03:35]

Patchset 2 (id:??) landed as
https://crrev.com/79092b25f10925f1cd4a91f1e0472b7697653f27
Cr-Commit-Position: refs/heads/master@{#331603}