Revert of [tab_grid] Hack-in border for active tab.

Revert of [tab_grid] Hack-in border for active tab. (patchset #5 id:80001 of https://codereview.chromium.org/2709563002/ )

Reason for revert:
Test "testLaunchAndTappingCell" in ios_showcase_egtests is broken by this CL. https://build.chromium.org/p/chromium.fyi/builders/EarlGreyiOS/builds/24682

Original issue's description:
> [tab_grid] Hack-in border for active tab.
> 
> Screenshot:
> https://drive.google.com/open?id=0BwS6YyQeisH5WmpVS0tHcl9tN0E
> 
> BUG=686770
> 
> Review-Url: https://codereview.chromium.org/2709563002
> Cr-Commit-Position: refs/heads/master@{#452796}
> Committed: https://chromium.googlesource.com/chromium/src/+/a10c1ff3e00da36f1532264aa1866433aedaaae5

TBR=sczs@chromium.org,jif@chromium.org,marq@chromium.org,lpromero@chromium.org,edchin@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=686770
Review-Url: https://codereview.chromium.org/2714763003
Cr-Commit-Position: refs/heads/master@{#452813}
Committed: https://chromium.googlesource.com/chromium/src/+/08c967e83d04e01d125b34698baa891f9882be03

[lody, 2017-02-24 13:42:42]

Created Revert of [tab_grid] Hack-in border for active tab.

[jif, 2017-02-24 14:07:21]

The CQ bit was checked by jif@chromium.org

[commit-bot: I haz the power, 2017-02-24 14:07:36]

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, 2017-02-24 14:07:36]

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

[commit-bot: I haz the power, 2017-02-24 14:07:37]

No L-G-T-M from a valid reviewer yet. 
CQ run can only be started by full committers or once the patch has
received an L-G-T-M from a full committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
Committers are members of the group "project-chromium-committers".
Note that this has nothing to do with OWNERS files.

[jif, 2017-02-24 14:07:59]

lgtm

[jif, 2017-02-24 14:08:19]

The CQ bit was checked by jif@chromium.org

[commit-bot: I haz the power, 2017-02-24 14:08:37]

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, 2017-02-24 14:09:20]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487945299197770, "parent_rev":
"a7d8979ed83c6e511a344b613cd4894ed0bbdfd7", "commit_rev":
"08c967e83d04e01d125b34698baa891f9882be03"}

[commit-bot: I haz the power, 2017-02-24 14:09:56]

Description was changed from

==========
Revert of [tab_grid] Hack-in border for active tab. (patchset #5 id:80001 of
https://codereview.chromium.org/2709563002/ )

Reason for revert:
Test "testLaunchAndTappingCell" in ios_showcase_egtests is broken by this CL.
https://build.chromium.org/p/chromium.fyi/builders/EarlGreyiOS/builds/24682

Original issue's description:
> [tab_grid] Hack-in border for active tab.
> 
> Screenshot:
> https://drive.google.com/open?id=0BwS6YyQeisH5WmpVS0tHcl9tN0E
> 
> BUG=686770
> 
> Review-Url: https://codereview.chromium.org/2709563002
> Cr-Commit-Position: refs/heads/master@{#452796}
> Committed:
https://chromium.googlesource.com/chromium/src/+/a10c1ff3e00da36f1532264aa186...

TBR=sczs@chromium.org,jif@chromium.org,marq@chromium.org,lpromero@chromium.or...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=686770
==========

to

==========
Revert of [tab_grid] Hack-in border for active tab. (patchset #5 id:80001 of
https://codereview.chromium.org/2709563002/ )

Reason for revert:
Test "testLaunchAndTappingCell" in ios_showcase_egtests is broken by this CL.
https://build.chromium.org/p/chromium.fyi/builders/EarlGreyiOS/builds/24682

Original issue's description:
> [tab_grid] Hack-in border for active tab.
> 
> Screenshot:
> https://drive.google.com/open?id=0BwS6YyQeisH5WmpVS0tHcl9tN0E
> 
> BUG=686770
> 
> Review-Url: https://codereview.chromium.org/2709563002
> Cr-Commit-Position: refs/heads/master@{#452796}
> Committed:
https://chromium.googlesource.com/chromium/src/+/a10c1ff3e00da36f1532264aa186...

TBR=sczs@chromium.org,jif@chromium.org,marq@chromium.org,lpromero@chromium.or...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=686770

Review-Url: https://codereview.chromium.org/2714763003
Cr-Commit-Position: refs/heads/master@{#452813}
Committed:
https://chromium.googlesource.com/chromium/src/+/08c967e83d04e01d125b34698baa...
==========

[commit-bot: I haz the power, 2017-02-24 14:09:57]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/08c967e83d04e01d125b34698baa...