Revert "Add new feature flag to enable background loader for downloads"

Revert "Add new feature flag to enable background loader for downloads"

This reverts commit 936aa9ea40216e8f196671817773450235a1fe4f.

Highly speculative revert for https://crbug.com/639618. If this doesn't
make things more green I'll reland, in which case I apologize for the
noise.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=639618
TBR=chili@chromium.org

Committed: https://crrev.com/49a0965d306375f84d25cc1c208339de7c5e3a57
Cr-Commit-Position: refs/heads/master@{#413349}

[Ken Rockot(use gerrit already), 2016-08-20 20:24:28]

The CQ bit was checked by rockot@chromium.org

[commit-bot: I haz the power, 2016-08-20 20:24:32]

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, 2016-08-20 20:25:14]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-20 20:27:12]

Description was changed from

==========
Revert "Add new feature flag to enable background loader for downloads"

This reverts commit 936aa9ea40216e8f196671817773450235a1fe4f.

Highly speculative revert for https://crbug.com/639618. If this doesn't
make things more green I'll reland, in which case I apologize for the
noise.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=639618
TBR=chili@chromium.org
==========

to

==========
Revert "Add new feature flag to enable background loader for downloads"

This reverts commit 936aa9ea40216e8f196671817773450235a1fe4f.

Highly speculative revert for https://crbug.com/639618. If this doesn't
make things more green I'll reland, in which case I apologize for the
noise.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=639618
TBR=chili@chromium.org

Committed: https://crrev.com/49a0965d306375f84d25cc1c208339de7c5e3a57
Cr-Commit-Position: refs/heads/master@{#413349}
==========

[commit-bot: I haz the power, 2016-08-20 20:27:13]

Patchset 1 (id:??) landed as
https://crrev.com/49a0965d306375f84d25cc1c208339de7c5e3a57
Cr-Commit-Position: refs/heads/master@{#413349}