[Merge M57] Fix import legacy, pref based pins.

[Merge M57] Fix import legacy, pref based pins.

This CL contains 2 fixes for importing legacy pref based pins.
1. Import may happen at the moment when profile is not synced yet and
in last case it does not actually contain information from previous
bulds.
2. Importing ignores apps that currently are not installed. This
leads to situation that we loose pin information for such apps
and in case apps are installed later they do not appear pinned.
Solution is to import all existings apps in prefs.

BUG=680821
TEST=Clearn app sync server data. Login on M52 and do some pinning.
     Next login on M55 and pin additional app. Next login to ToT
     and observe that pin is restored for existing apps and
     pins appear automatically once apps are installed later.
TBR=stevenjb@chromium.org
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2646973003
Cr-Commit-Position: refs/heads/master@{#445398}
(cherry picked from commit d8cc9d23b26dc31e050fdc1e2042f639d8a608fa)

Review-Url: https://codereview.chromium.org/2655553002
Cr-Commit-Position: refs/branch-heads/2987@{#51}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/932919878abdfe3d0e0da83da1125726425949c3

[khmel, 2017-01-24 01:34:50]

The CQ bit was checked by khmel@chromium.org

[commit-bot: I haz the power, 2017-01-24 01:35:28]

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, 2017-01-24 01:49:26]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485221690040780, "parent_rev":
"19950962a9559e5d3a1e1cb45fc938678cbdd3ab", "commit_rev":
"932919878abdfe3d0e0da83da1125726425949c3"}

[commit-bot: I haz the power, 2017-01-24 01:50:18]

Description was changed from

==========
[Merge M57] Fix import legacy, pref based pins.

This CL contains 2 fixes for importing legacy pref based pins.
1. Import may happen at the moment when profile is not synced yet and
in last case it does not actually contain information from previous
bulds.
2. Importing ignores apps that currently are not installed. This
leads to situation that we loose pin information for such apps
and in case apps are installed later they do not appear pinned.
Solution is to import all existings apps in prefs.

BUG=680821
TEST=Clearn app sync server data. Login on M52 and do some pinning.
     Next login on M55 and pin additional app. Next login to ToT
     and observe that pin is restored for existing apps and
     pins appear automatically once apps are installed later.
TBR=stevenjb@chromium.org
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2646973003
Cr-Commit-Position: refs/heads/master@{#445398}
(cherry picked from commit d8cc9d23b26dc31e050fdc1e2042f639d8a608fa)
==========

to

==========
[Merge M57] Fix import legacy, pref based pins.

This CL contains 2 fixes for importing legacy pref based pins.
1. Import may happen at the moment when profile is not synced yet and
in last case it does not actually contain information from previous
bulds.
2. Importing ignores apps that currently are not installed. This
leads to situation that we loose pin information for such apps
and in case apps are installed later they do not appear pinned.
Solution is to import all existings apps in prefs.

BUG=680821
TEST=Clearn app sync server data. Login on M52 and do some pinning.
     Next login on M55 and pin additional app. Next login to ToT
     and observe that pin is restored for existing apps and
     pins appear automatically once apps are installed later.
TBR=stevenjb@chromium.org
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2646973003
Cr-Commit-Position: refs/heads/master@{#445398}
(cherry picked from commit d8cc9d23b26dc31e050fdc1e2042f639d8a608fa)

Review-Url: https://codereview.chromium.org/2655553002
Cr-Commit-Position: refs/branch-heads/2987@{#51}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/932919878abdfe3d0e0da83da112...
==========

[commit-bot: I haz the power, 2017-01-24 01:50:18]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/932919878abdfe3d0e0da83da112...