Make FileSystemDirURLRequestJobTest locale-invulnerable

Make FileSystemDirURLRequestJobTest locale-invulnerable

The format of the date in directory listing entry depends on the current
locale. In some countries (for example Poland) DD.mm.YYYY format is used.
base::Time::FromString() internally uses PR_ParseTimeString() from NSPR
library which doesn't support this format (date with dots as separators).
Use icu::DateFormat instead which is able to parse such kind of date
format.

BUG=

Committed: https://crrev.com/d20733a2d4a1ead1db7d9175fcaa789d33f93082
Cr-Commit-Position: refs/heads/master@{#340050}

[Tomasz Moniuszko, 2015-07-17 13:09:39]

tmoniuszko@opera.com changed reviewers:
+ tzik@chromium.org

[tzik, 2015-07-21 04:02:03]

lgtm

[Tomasz Moniuszko, 2015-07-21 06:39:40]

The CQ bit was checked by tmoniuszko@opera.com

[commit-bot: I haz the power, 2015-07-21 06:39:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1246463002/1

[commit-bot: I haz the power, 2015-07-21 06:51:22]

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

[commit-bot: I haz the power, 2015-07-21 06:51:23]

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

[Tomasz Moniuszko, 2015-07-22 12:06:29]

The CQ bit was checked by tmoniuszko@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2015-07-22 12:06:35]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1246463002/20001

[commit-bot: I haz the power, 2015-07-22 12:36:26]

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

[commit-bot: I haz the power, 2015-07-22 12:36:27]

Dry run: This issue passed the CQ dry run.

[Tomasz Moniuszko, 2015-07-23 07:14:40]

The CQ bit was checked by tmoniuszko@opera.com

[Tomasz Moniuszko, 2015-07-23 07:14:40]

The patchset sent to the CQ was uploaded after l-g-t-m from tzik@chromium.org
Link to the patchset: https://codereview.chromium.org/1246463002/#ps20001
(title: "Use createDateTimeInstance() + initialize status")

[commit-bot: I haz the power, 2015-07-23 07:14:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1246463002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1246463002/20001

[commit-bot: I haz the power, 2015-07-23 07:19:37]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-07-23 07:20:39]

Patchset 2 (id:??) landed as
https://crrev.com/d20733a2d4a1ead1db7d9175fcaa789d33f93082
Cr-Commit-Position: refs/heads/master@{#340050}