Revert of Work around a clang-cl devirtualization bug.

Revert of Work around a clang-cl devirtualization bug. (patchset #2 id:20001 of https://codereview.chromium.org/1949653002/ )

Reason for revert:
We fixed the compiler bug, this should no longer be needed.

Original issue's description:
> Work around a clang-cl devirtualization bug.
>
> clang-cl currently miscompiles calls to virtual methods of base classes
> of a final class.  Since the type is final, it tries to devirtualize the call,
> but then it forgets to apply the right this adjustment.
>
> https://codereview.chromium.org/1938853002 added static_casts to a super class
> for visibility reasons, exposing this bug.
>
> BUG=608705
> R=rouslan@chromium.org
>
> Committed: https://chromium.googlesource.com/chromium/src/+/9306e66e5e680801132688b987fe850f1bb43b7a

TBR=rouslan@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=608705
Committed: https://crrev.com/c19da3c46af754416c299b6dacf2223f402b1b34
Cr-Commit-Position: refs/heads/master@{#392371}

[Nico, 2016-05-09 16:51:42]

Created Revert of Work around a clang-cl devirtualization bug.

[commit-bot: I haz the power, 2016-05-09 16:52:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1958183002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1958183002/1

[please use gerrit instead, 2016-05-09 16:53:49]

lgtm

[commit-bot: I haz the power, 2016-05-09 16:54:10]

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

[commit-bot: I haz the power, 2016-05-09 16:54:11]

Try jobs failed on following builders:
  ios-device-gn on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-device-gn/bui...)
  ios-simulator-gn on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator-gn/...)
  mac_chromium_gn_rel on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_gn_r...)

[Nico, 2016-05-09 16:57:39]

The CQ bit was checked by thakis@chromium.org

[Nico, 2016-05-09 16:57:39]

The patchset sent to the CQ was uploaded after l-g-t-m from rouslan@chromium.org
Link to the patchset: https://codereview.chromium.org/1958183002/#ps40001
(title: "rebase")

[commit-bot: I haz the power, 2016-05-09 16:58:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1958183002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1958183002/40001

[commit-bot: I haz the power, 2016-05-09 18:25:52]

Committed patchset #2 (id:40001)

[commit-bot: I haz the power, 2016-05-09 18:28:26]

Description was changed from

==========
Revert of Work around a clang-cl devirtualization bug. (patchset #2 id:20001 of
https://codereview.chromium.org/1949653002/ )

Reason for revert:
We fixed the compiler bug, this should no longer be needed.

Original issue's description:
> Work around a clang-cl devirtualization bug.
> 
> clang-cl currently miscompiles calls to virtual methods of base classes
> of a final class.  Since the type is final, it tries to devirtualize the call,
> but then it forgets to apply the right this adjustment.
> 
> https://codereview.chromium.org/1938853002 added static_casts to a super class
> for visibility reasons, exposing this bug.
> 
> BUG=608705
> R=rouslan@chromium.org
> 
> Committed:
https://chromium.googlesource.com/chromium/src/+/9306e66e5e680801132688b987fe...

TBR=rouslan@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=608705
==========

to

==========
Revert of Work around a clang-cl devirtualization bug. (patchset #2 id:20001 of
https://codereview.chromium.org/1949653002/ )

Reason for revert:
We fixed the compiler bug, this should no longer be needed.

Original issue's description:
> Work around a clang-cl devirtualization bug.
>
> clang-cl currently miscompiles calls to virtual methods of base classes
> of a final class.  Since the type is final, it tries to devirtualize the call,
> but then it forgets to apply the right this adjustment.
>
> https://codereview.chromium.org/1938853002 added static_casts to a super class
> for visibility reasons, exposing this bug.
>
> BUG=608705
> R=rouslan@chromium.org
>
> Committed:
https://chromium.googlesource.com/chromium/src/+/9306e66e5e680801132688b987fe...

TBR=rouslan@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=608705

Committed: https://crrev.com/c19da3c46af754416c299b6dacf2223f402b1b34
Cr-Commit-Position: refs/heads/master@{#392371}
==========

[commit-bot: I haz the power, 2016-05-09 18:28:27]

Patchset 2 (id:??) landed as
https://crrev.com/c19da3c46af754416c299b6dacf2223f402b1b34
Cr-Commit-Position: refs/heads/master@{#392371}