Revert "Remove obsolete LTR scrollbar padding hack."

Revert "Remove obsolete LTR scrollbar padding hack."

Breaks caret rendering at rightmost edge of some situations.

This reverts commit 5fdc15a7ec5c12ea3a708796c8cb3338c474f0fa.

BUG=548596, 523969
TBR=chrishtr

Committed: https://crrev.com/4a57b23cb4eb0a97fa04a7e11c97d5f0b6c15896
Cr-Commit-Position: refs/heads/master@{#360247}

[wkorman, 2015-11-17 22:30:40]

Description was changed from

==========
Revert "Remove obsolete LTR scrollbar padding hack."

Breaks caret rendering at rightmost edge of some situations.

This reverts commit 5fdc15a7ec5c12ea3a708796c8cb3338c474f0fa.

BUG=548596,523969
==========

to

==========
Revert "Remove obsolete LTR scrollbar padding hack."

Breaks caret rendering at rightmost edge of some situations.

This reverts commit 5fdc15a7ec5c12ea3a708796c8cb3338c474f0fa.

BUG=548596,523969
TBR=chrishtr
==========

[wkorman, 2015-11-17 22:32:22]

The CQ bit was checked by wkorman@chromium.org

[commit-bot: I haz the power, 2015-11-17 22:35:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1451103005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1451103005/1

[wkorman, 2015-11-17 22:35:17]

wkorman@chromium.org changed reviewers:
+ chrishtr@chromium.org

[commit-bot: I haz the power, 2015-11-17 23:33:17]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-11-17 23:33:18]

Try jobs failed on following builders:
  linux_chromium_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  win_chromium_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[wkorman, 2015-11-17 23:48:52]

The CQ bit was checked by wkorman@chromium.org

[commit-bot: I haz the power, 2015-11-17 23:49:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1451103005/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1451103005/20001

[commit-bot: I haz the power, 2015-11-18 01:10:10]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-11-18 01:11:13]

Patchset 2 (id:??) landed as
https://crrev.com/4a57b23cb4eb0a97fa04a7e11c97d5f0b6c15896
Cr-Commit-Position: refs/heads/master@{#360247}