[SyncFS] Show if a tracker is demoted or not in chrome://syncfs-internals

[SyncFS] Show if a tracker is demoted or not in chrome://syncfs-internals

Adds "demoted" column in database dump view to see a tracker is demoted or not.

BUG=None

Committed: https://crrev.com/ab3bb07faa67b6e4dfb434f9d740a99575e78903
Cr-Commit-Position: refs/heads/master@{#297405}

[tzik, 2014-09-30 07:23:53]

tzik@chromium.org changed reviewers:
+ peria@chromium.org

[tzik, 2014-09-30 07:23:53]

PTL

[peria, 2014-09-30 10:35:23]

lgtm

[tzik, 2014-09-30 10:45:52]

The CQ bit was checked by tzik@chromium.org

[commit-bot: I haz the power, 2014-09-30 10:46:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/612343002/20001

[commit-bot: I haz the power, 2014-09-30 11:34:47]

Committed patchset #2 (id:20001) as a880c35541db6914315a8c51c43fa4285dc09223

[commit-bot: I haz the power, 2014-09-30 11:35:24]

Patchset 2 (id:??) landed as
https://crrev.com/ab3bb07faa67b6e4dfb434f9d740a99575e78903
Cr-Commit-Position: refs/heads/master@{#297405}