Implement local storage for App List in case app sync is off.

Implement local storage for App List in case app sync is off.

This CL keeps local copy of current app list service and in
case app sync is off, date from local storage is used to
init app list model. Once sync is resumed, local copy is
overriden and information form sync is used.

BUG=641535
TEST=Unit and sync tests added
TEST=Manually on device.

TBR=reviewer@chromium.org
Reland: http://crrev.com/2416133002
(cherry picked from commit f06c029695e6d3a62ea950c1ba0f60cf01c353a8)

Review-Url: https://codereview.chromium.org/2416133002
Committed: https://crrev.com/eca5057f03c04b7dbb0764fa090aac36fbd9731c
Cr-Original-Commit-Position: refs/heads/master@{#427390}
Cr-Commit-Position: refs/heads/master@{#429621}

[khmel, 2016-11-03 15:55:26]

The CQ bit was checked by khmel@chromium.org

[commit-bot: I haz the power, 2016-11-03 15:56:04]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[khmel, 2016-11-03 15:57:27]

The CQ bit was unchecked by khmel@chromium.org

[khmel, 2016-11-03 16:10:57]

The CQ bit was checked by khmel@chromium.org

[commit-bot: I haz the power, 2016-11-03 16:11:27]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-03 16:55:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-03 17:13:12]

Description was changed from

==========
Implement local storage for App List in case app sync is off.

This CL keeps local copy of current app list service and in
case app sync is off, date from local storage is used to
init app list model. Once sync is resumed, local copy is
overriden and information form sync is used.

BUG=641535
TEST=Unit and sync tests added
TEST=Manually on device.

TBR=reviewer@chromium.org
Reland: http://crrev.com/2416133002
(cherry picked from commit f06c029695e6d3a62ea950c1ba0f60cf01c353a8)

Review-Url: https://codereview.chromium.org/2416133002
Cr-Commit-Position: refs/heads/master@{#427390}
==========

to

==========
Implement local storage for App List in case app sync is off.

This CL keeps local copy of current app list service and in
case app sync is off, date from local storage is used to
init app list model. Once sync is resumed, local copy is
overriden and information form sync is used.

BUG=641535
TEST=Unit and sync tests added
TEST=Manually on device.

TBR=reviewer@chromium.org
Reland: http://crrev.com/2416133002
(cherry picked from commit f06c029695e6d3a62ea950c1ba0f60cf01c353a8)

Review-Url: https://codereview.chromium.org/2416133002
Committed: https://crrev.com/eca5057f03c04b7dbb0764fa090aac36fbd9731c
Cr-Original-Commit-Position: refs/heads/master@{#427390}
Cr-Commit-Position: refs/heads/master@{#429621}
==========

[commit-bot: I haz the power, 2016-11-03 17:13:13]

Patchset 1 (id:??) landed as
https://crrev.com/eca5057f03c04b7dbb0764fa090aac36fbd9731c
Cr-Commit-Position: refs/heads/master@{#429621}