Fix the download summary notification icons

Fix the download summary notification icons

Make the icon ordering follow the expected behavior: progress, pending,
failed, paused, completed.  This requires additional changes to support
listening to when completed and failed notifications are dismissed so we
can update the icon state, so I added a pending intent to those delete
actions as well, but prevented it from restarting the service in case
it's the last notification.  For proper handling of all intent actions,
I still added code to handle the intent for the case where the service
does get started with that action.

BUG=699687
Review-Url: https://codereview.chromium.org/2751813004
Cr-Commit-Position: refs/heads/master@{#457873}
(cherry picked from commit 8055a28acd2bf29534913610369be7ae1b0f894f)

Review-Url: https://codereview.chromium.org/2757183002 .
Cr-Commit-Position: refs/branch-heads/3029@{#288}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed: https://chromium.googlesource.com/chromium/src/+/a965ff59517676e50cbdf4a35c69cd26a627afda

[David Trainor- moved to gerrit, 2017-03-20 05:38:09]

Description was changed from

==========
Fix the download summary notification icons

Make the icon ordering follow the expected behavior: progress, pending,
failed, paused, completed.  This requires additional changes to support
listening to when completed and failed notifications are dismissed so we
can update the icon state, so I added a pending intent to those delete
actions as well, but prevented it from restarting the service in case
it's the last notification.  For proper handling of all intent actions,
I still added code to handle the intent for the case where the service
does get started with that action.

BUG=699687

Review-Url: https://codereview.chromium.org/2751813004
Cr-Commit-Position: refs/heads/master@{#457873}
(cherry picked from commit 8055a28acd2bf29534913610369be7ae1b0f894f)
==========

to

==========
Fix the download summary notification icons

Make the icon ordering follow the expected behavior: progress, pending,
failed, paused, completed.  This requires additional changes to support
listening to when completed and failed notifications are dismissed so we
can update the icon state, so I added a pending intent to those delete
actions as well, but prevented it from restarting the service in case
it's the last notification.  For proper handling of all intent actions,
I still added code to handle the intent for the case where the service
does get started with that action.

BUG=699687

Review-Url: https://codereview.chromium.org/2751813004
Cr-Commit-Position: refs/heads/master@{#457873}
(cherry picked from commit 8055a28acd2bf29534913610369be7ae1b0f894f)

Review-Url: https://codereview.chromium.org/2757183002 .
Cr-Commit-Position: refs/branch-heads/3029@{#288}
Cr-Branched-From:
939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed:
https://chromium.googlesource.com/chromium/src/+/a965ff59517676e50cbdf4a35c69...
==========

[David Trainor- moved to gerrit, 2017-03-20 05:38:10]

Committed patchset #1 (id:1) manually as
a965ff59517676e50cbdf4a35c69cd26a627afda (tree was closed).