Change Easy Unlock references in strings to Smart Lock.

Change Easy Unlock references in strings to Smart Lock.

This is a first pass only changing values of string resources, so we can
smoothly merge it to M38.

Note: strings that are not in M38 are not changed.

BUG=421466
TEST=manual, no merge conflicts for 2125

Committed: https://crrev.com/42148e93caec39f8d1dbfebf002130989be1f5dd
Cr-Commit-Position: refs/heads/master@{#299163}

[Tim Song, 2014-10-10 18:09:56]

tengs@chromium.org changed reviewers:
+ xiyuan@chromium.org

[xiyuan, 2014-10-10 18:11:21]

lgtm

[Tim Song, 2014-10-10 18:45:10]

The CQ bit was checked by tengs@chromium.org

[commit-bot: I haz the power, 2014-10-10 18:45:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/649723002/1

[commit-bot: I haz the power, 2014-10-10 19:41:05]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-10 19:41:50]

Patchset 1 (id:??) landed as
https://crrev.com/42148e93caec39f8d1dbfebf002130989be1f5dd
Cr-Commit-Position: refs/heads/master@{#299163}