[sessions] Properly namespace recently-componentized TabRestore code

[sessions] Properly namespace recently-componentized TabRestore code

This CL puts all the core TabRestore code that was recently componentized in
the sessions namespace.

BUG=371476
TBR=sky

Committed: https://crrev.com/74001adc667974152b861eda769a750da4242b73
Cr-Commit-Position: refs/heads/master@{#349648}

[blundell, 2015-09-18 10:34:54]

blundell@chromium.org changed reviewers:
+ sky@chromium.org

[blundell, 2015-09-18 10:34:55]

Hi Scott,

I'm going to TBR this, as it's just putting the sessions namespace around code
that's now in the component, running search-and-replace scripts to add the
namespace to callsites in //chrome, and running "git cl format".

[blundell, 2015-09-18 10:35:12]

The CQ bit was checked by blundell@chromium.org

[commit-bot: I haz the power, 2015-09-18 10:35:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1350653004/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1350653004/40001

[commit-bot: I haz the power, 2015-09-18 11:04:31]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-09-18 11:05:04]

Patchset 3 (id:??) landed as
https://crrev.com/74001adc667974152b861eda769a750da4242b73
Cr-Commit-Position: refs/heads/master@{#349648}

[sky, 2015-09-18 15:32:55]

Rubber stamp LGTM