Delete unused class FilesystemScope.

Delete unused class FilesystemScope.

It became unused in cl https://codereview.webrtc.org/2541453002

BUG=webrtc:6424
Review-Url: https://codereview.webrtc.org/2703793002
Cr-Commit-Position: refs/heads/master@{#16711}
Committed: https://chromium.googlesource.com/external/webrtc/+/fe5d521a694cecd66e8c58dc0c0e0103e7822039

[nisse-webrtc, 2017-02-17 15:27:55]

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

[pthatcher1, 2017-02-17 18:11:05]

lgtm

[nisse-webrtc, 2017-02-20 07:39:28]

The CQ bit was checked by nisse@webrtc.org

[commit-bot: I haz the power, 2017-02-20 07:39:38]

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, 2017-02-20 09:06:47]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487576368001880, "parent_rev":
"915bbd53e477d86515b9782d66b3a7275a172fa5", "commit_rev":
"fe5d521a694cecd66e8c58dc0c0e0103e7822039"}

[commit-bot: I haz the power, 2017-02-20 09:06:50]

Description was changed from

==========
Delete unused class FilesystemScope.

It became unused in cl https://codereview.webrtc.org/2541453002

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

to

==========
Delete unused class FilesystemScope.

It became unused in cl https://codereview.webrtc.org/2541453002

BUG=webrtc:6424

Review-Url: https://codereview.webrtc.org/2703793002
Cr-Commit-Position: refs/heads/master@{#16711}
Committed:
https://chromium.googlesource.com/external/webrtc/+/fe5d521a694cecd66e8c58dc0...
==========

[commit-bot: I haz the power, 2017-02-20 09:06:50]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/external/webrtc/+/fe5d521a694cecd66e8c58dc0...