Delete unused class AsyncFile.

Delete unused class AsyncFile.

BUG=webrtc:6424
Committed: https://crrev.com/921019c48baee32431308001904bdd297c8d7865
Cr-Commit-Position: refs/heads/master@{#15561}

[nisse-webrtc, 2016-12-12 09:45:22]

nisse@webrtc.org changed reviewers:
+ pthatcher@webrtc.org

[nisse-webrtc, 2016-12-12 09:45:23]

PTAL.

[pthatcher1, 2016-12-12 23:12:56]

lgtm

[nisse-webrtc, 2016-12-13 07:37:52]

The CQ bit was checked by nisse@webrtc.org

[commit-bot: I haz the power, 2016-12-13 07:38:00]

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

[commit-bot: I haz the power, 2016-12-13 07:55:56]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1481614672663820, "parent_rev":
"08addc2a09b57ed13d1c9f9ef2b91646083d980c", "commit_rev":
"c62f5d25cdb6922a6e77769d51e1c6a40af8bc6f"}

[commit-bot: I haz the power, 2016-12-13 07:55:59]

Description was changed from

==========
Delete unused class AsyncFile.

BUG=webrtc:6424
==========

to

==========
Delete unused class AsyncFile.

BUG=webrtc:6424

Review-Url: https://codereview.webrtc.org/2566953002
==========

[commit-bot: I haz the power, 2016-12-13 07:56:00]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-13 07:56:07]

Description was changed from

==========
Delete unused class AsyncFile.

BUG=webrtc:6424

Review-Url: https://codereview.webrtc.org/2566953002
==========

to

==========
Delete unused class AsyncFile.

BUG=webrtc:6424

Committed: https://crrev.com/921019c48baee32431308001904bdd297c8d7865
Cr-Commit-Position: refs/heads/master@{#15561}
==========

[commit-bot: I haz the power, 2016-12-13 07:56:08]

Patchset 1 (id:??) landed as
https://crrev.com/921019c48baee32431308001904bdd297c8d7865
Cr-Commit-Position: refs/heads/master@{#15561}