Revert of NetworkService: Destroy NetworkContexts on NetworkService teardown.

Revert of NetworkService: Destroy NetworkContexts on NetworkService teardown. (patchset #3 id:40001 of https://codereview.chromium.org/2962693002/ )

Reason for revert:
This conflicted with https://codereview.chromium.org/2951813002/, which landed at about the same time.  Will fix and reland.

Original issue's description:
> NetworkService: Destroy NetworkContexts on NetworkService teardown.
> 
> Also fix NetworkContexts potentially not being destroyed on connection
> error / consumer teardown, due to calling str::move twice on the same
> RequestPtr.
> 
> BUG=736472
> 
> Review-Url: https://codereview.chromium.org/2962693002
> Cr-Commit-Position: refs/heads/master@{#482745}
> Committed: https://chromium.googlesource.com/chromium/src/+/cfbf85b0c37adf3acccead282bf5c9b794ba4009

TBR=jam@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=736472
Review-Url: https://codereview.chromium.org/2960843005
Cr-Commit-Position: refs/heads/master@{#482763}
Committed: https://chromium.googlesource.com/chromium/src/+/1caf74b3fa2e801138207bae19471d408298268b

[mmenke, 2017-06-27 22:18:23]

The CQ bit was checked by mmenke@chromium.org

[mmenke, 2017-06-27 22:18:24]

Created Revert of NetworkService: Destroy NetworkContexts on NetworkService
teardown.

[commit-bot: I haz the power, 2017-06-27 22:18:44]

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, 2017-06-27 22:19:09]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1498601903842280, "parent_rev":
"b962595bafd843504c3489fe8dbbf5e4c518528b", "commit_rev":
"1caf74b3fa2e801138207bae19471d408298268b"}

[commit-bot: I haz the power, 2017-06-27 22:19:22]

Description was changed from

==========
Revert of NetworkService: Destroy NetworkContexts on NetworkService teardown.
(patchset #3 id:40001 of https://codereview.chromium.org/2962693002/ )

Reason for revert:
This conflicted with https://codereview.chromium.org/2951813002/, which landed
at about the same time.  Will fix and reland.

Original issue's description:
> NetworkService: Destroy NetworkContexts on NetworkService teardown.
> 
> Also fix NetworkContexts potentially not being destroyed on connection
> error / consumer teardown, due to calling str::move twice on the same
> RequestPtr.
> 
> BUG=736472
> 
> Review-Url: https://codereview.chromium.org/2962693002
> Cr-Commit-Position: refs/heads/master@{#482745}
> Committed:
https://chromium.googlesource.com/chromium/src/+/cfbf85b0c37adf3acccead282bf5...

TBR=jam@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=736472
==========

to

==========
Revert of NetworkService: Destroy NetworkContexts on NetworkService teardown.
(patchset #3 id:40001 of https://codereview.chromium.org/2962693002/ )

Reason for revert:
This conflicted with https://codereview.chromium.org/2951813002/, which landed
at about the same time.  Will fix and reland.

Original issue's description:
> NetworkService: Destroy NetworkContexts on NetworkService teardown.
> 
> Also fix NetworkContexts potentially not being destroyed on connection
> error / consumer teardown, due to calling str::move twice on the same
> RequestPtr.
> 
> BUG=736472
> 
> Review-Url: https://codereview.chromium.org/2962693002
> Cr-Commit-Position: refs/heads/master@{#482745}
> Committed:
https://chromium.googlesource.com/chromium/src/+/cfbf85b0c37adf3acccead282bf5...

TBR=jam@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=736472

Review-Url: https://codereview.chromium.org/2960843005
Cr-Commit-Position: refs/heads/master@{#482763}
Committed:
https://chromium.googlesource.com/chromium/src/+/1caf74b3fa2e801138207bae1947...
==========

[commit-bot: I haz the power, 2017-06-27 22:19:23]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/1caf74b3fa2e801138207bae1947...