Align file_manager cr-dialog-close button to left in rtl locale

Align file_manager cr-dialog-close button to left in rtl locale.

TEST=Open suggest apps dialog in ar locale, the dialog button
    should be on the left
BUG=None

Committed: https://crrev.com/d532c182b9c7df2a25787d06897cd954607dafb7
Cr-Commit-Position: refs/heads/master@{#322513}

[tbarzic, 2015-03-26 22:22:14]

tbarzic@chromium.org changed reviewers:
+ mtomasz@chromium.org

[mtomasz, 2015-03-27 00:17:38]

lgtm, thanks for fixing

[mtomasz, 2015-03-27 00:17:41]

The CQ bit was checked by mtomasz@chromium.org

[commit-bot: I haz the power, 2015-03-27 00:17:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1041463002/1

[commit-bot: I haz the power, 2015-03-27 00:46:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-27 00:48:10]

Patchset 1 (id:??) landed as
https://crrev.com/d532c182b9c7df2a25787d06897cd954607dafb7
Cr-Commit-Position: refs/heads/master@{#322513}