[Offline pages] Ensuring tasks scheduled through GCM NM are persisted

[Offline pages] Ensuring tasks scheduled through GCM NM are persisted

We are currently not persisting tasks scheduled through GCM Network
Manager, which means requests to offline pages in the background will
not be resumed after a device restart.

This patch fixes the issue.

BUG=704610
Review-Url: https://codereview.chromium.org/2769233003
Cr-Commit-Position: refs/heads/master@{#459174}
(cherry picked from commit 0c1ab0868b12be571311df463894f06e47c8e62a)

Review-Url: https://codereview.chromium.org/2776723002 .
Cr-Commit-Position: refs/branch-heads/3029@{#409}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed: https://chromium.googlesource.com/chromium/src/+/375291f41f99e762d3213317d2544f5b78ec4fb1

[fgorski, 2017-03-24 16:18:43]

Description was changed from

==========
[Offline pages] Ensuring tasks scheduled through GCM NM are persisted

We are currently not persisting tasks scheduled through GCM Network
Manager, which means requests to offline pages in the background will
not be resumed after a device restart.

This patch fixes the issue.

BUG=704610

Review-Url: https://codereview.chromium.org/2769233003
Cr-Commit-Position: refs/heads/master@{#459174}
(cherry picked from commit 0c1ab0868b12be571311df463894f06e47c8e62a)
==========

to

==========
[Offline pages] Ensuring tasks scheduled through GCM NM are persisted

We are currently not persisting tasks scheduled through GCM Network
Manager, which means requests to offline pages in the background will
not be resumed after a device restart.

This patch fixes the issue.

BUG=704610

Review-Url: https://codereview.chromium.org/2769233003
Cr-Commit-Position: refs/heads/master@{#459174}
(cherry picked from commit 0c1ab0868b12be571311df463894f06e47c8e62a)

Review-Url: https://codereview.chromium.org/2776723002 .
Cr-Commit-Position: refs/branch-heads/3029@{#409}
Cr-Branched-From:
939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed:
https://chromium.googlesource.com/chromium/src/+/375291f41f99e762d3213317d254...
==========

[fgorski, 2017-03-24 16:18:45]

Committed patchset #1 (id:1) manually as
375291f41f99e762d3213317d2544f5b78ec4fb1.