Revert of [MD settings] hide extra horizontal scrollbar

Revert of [MD settings] hide extra horizontal scrollbar (patchset #1 id:20001 of https://codereview.chromium.org/2753943003/ )

Reason for revert:
The bug this is fixing
https://bugs.chromium.org/p/chromium/issues/detail?id=645346

Is not as bad as the bug it introduced
https://bugs.chromium.org/p/chromium/issues/detail?id=702496

Original issue's description:
> [MD settings] hide extra horizontal scrollbar
> 
> This CL prevents an unwanted horizontal scrollbar from flashing at the
> bottom of the page when transitioning from a sub-page back to the basic
> page.
> 
> BUG=645346
> CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation
> 
> Review-Url: https://codereview.chromium.org/2753943003
> Cr-Commit-Position: refs/heads/master@{#457570}
> Committed: https://chromium.googlesource.com/chromium/src/+/bfa14e6ef0b8adc0f56d899f3776fe4b960b8978

TBR=dpapad@chromium.org,dschuyler@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=645346
Review-Url: https://codereview.chromium.org/2756253002
Cr-Commit-Position: refs/heads/master@{#457817}
Committed: https://chromium.googlesource.com/chromium/src/+/364a557a2bdad974a06b6a74ce46520b26ebba3c

[Dan Beam, 2017-03-17 18:11:57]

The CQ bit was checked by dbeam@chromium.org

[Dan Beam, 2017-03-17 18:11:57]

Created Revert of [MD settings] hide extra horizontal scrollbar

[commit-bot: I haz the power, 2017-03-17 18:12:54]

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, 2017-03-17 18:13:57]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489774317308320, "parent_rev":
"8a00591ff93138eeff480aa0e860b92db580e903", "commit_rev":
"2152ad656e529bc261a41a8f5eaa7ae9ce7b3eee"}

[commit-bot: I haz the power, 2017-03-17 18:19:11]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489774317308320, "parent_rev":
"a30eb8104246637502cad02cdc8bbd2cc8566abe", "commit_rev":
"364a557a2bdad974a06b6a74ce46520b26ebba3c"}

[commit-bot: I haz the power, 2017-03-17 18:20:17]

Description was changed from

==========
Revert of [MD settings] hide extra horizontal scrollbar (patchset #1 id:20001 of
https://codereview.chromium.org/2753943003/ )

Reason for revert:
The bug this is fixing
https://bugs.chromium.org/p/chromium/issues/detail?id=645346

Is not as bad as the bug it introduced
https://bugs.chromium.org/p/chromium/issues/detail?id=702496

Original issue's description:
> [MD settings] hide extra horizontal scrollbar
> 
> This CL prevents an unwanted horizontal scrollbar from flashing at the
> bottom of the page when transitioning from a sub-page back to the basic
> page.
> 
> BUG=645346
> CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation
> 
> Review-Url: https://codereview.chromium.org/2753943003
> Cr-Commit-Position: refs/heads/master@{#457570}
> Committed:
https://chromium.googlesource.com/chromium/src/+/bfa14e6ef0b8adc0f56d899f3776...

TBR=dpapad@chromium.org,dschuyler@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=645346
==========

to

==========
Revert of [MD settings] hide extra horizontal scrollbar (patchset #1 id:20001 of
https://codereview.chromium.org/2753943003/ )

Reason for revert:
The bug this is fixing
https://bugs.chromium.org/p/chromium/issues/detail?id=645346

Is not as bad as the bug it introduced
https://bugs.chromium.org/p/chromium/issues/detail?id=702496

Original issue's description:
> [MD settings] hide extra horizontal scrollbar
> 
> This CL prevents an unwanted horizontal scrollbar from flashing at the
> bottom of the page when transitioning from a sub-page back to the basic
> page.
> 
> BUG=645346
> CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation
> 
> Review-Url: https://codereview.chromium.org/2753943003
> Cr-Commit-Position: refs/heads/master@{#457570}
> Committed:
https://chromium.googlesource.com/chromium/src/+/bfa14e6ef0b8adc0f56d899f3776...

TBR=dpapad@chromium.org,dschuyler@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=645346

Review-Url: https://codereview.chromium.org/2756253002
Cr-Commit-Position: refs/heads/master@{#457817}
Committed:
https://chromium.googlesource.com/chromium/src/+/364a557a2bdad974a06b6a74ce46...
==========

[commit-bot: I haz the power, 2017-03-17 18:20:18]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/364a557a2bdad974a06b6a74ce46...