Revert of Roll clang 301384:303273.

Revert of Roll clang 301384:303273. (patchset #1 id:1 of https://codereview.chromium.org/2884383004/ )

Reason for revert:
Speculative revert: This might have broken cc_unittests on Linux MSan: https://build.chromium.org/p/chromium.memory/builders/Linux%20MSan%20Tests
(In fact, the same tests failed on the linux_chromium_msan_rel_ng right here.)

The failing tests are related to shader transpiling which uses ANGLE which uses clang. Kind of a long shot, but nothing else looks related.

Original issue's description:
> Roll clang 301384:303273.
> 
> BUG=714769
> R=thakis@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2884383004 .
> Cr-Commit-Position: refs/heads/master@{#472665}
> Committed: https://chromium.googlesource.com/chromium/src/+/027325f153ba7f269b197cac9b43cca8519f08bf

TBR=thakis@chromium.org,hans@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=714769
Review-Url: https://codereview.chromium.org/2888363002
Cr-Commit-Position: refs/heads/master@{#472771}
Committed: https://chromium.googlesource.com/chromium/src/+/d6dc38b8713ca8ac2fd49ee08f0966d221298486

[Marc Treib, 2017-05-18 11:53:59]

The CQ bit was checked by treib@chromium.org

[Marc Treib, 2017-05-18 11:53:59]

Created Revert of Roll clang 301384:303273.

[commit-bot: I haz the power, 2017-05-18 11:54:38]

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, 2017-05-18 11:55:20]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495108439465590, "parent_rev":
"201725214f9c7897c0b1a3ded3603cad83ff0b00", "commit_rev":
"d6dc38b8713ca8ac2fd49ee08f0966d221298486"}

[commit-bot: I haz the power, 2017-05-18 11:55:38]

Description was changed from

==========
Revert of Roll clang 301384:303273. (patchset #1 id:1 of
https://codereview.chromium.org/2884383004/ )

Reason for revert:
Speculative revert: This might have broken cc_unittests on Linux MSan:
https://build.chromium.org/p/chromium.memory/builders/Linux%20MSan%20Tests
(In fact, the same tests failed on the linux_chromium_msan_rel_ng right here.)

The failing tests are related to shader transpiling which uses ANGLE which uses
clang. Kind of a long shot, but nothing else looks related.

Original issue's description:
> Roll clang 301384:303273.
> 
> BUG=714769
> R=thakis@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2884383004 .
> Cr-Commit-Position: refs/heads/master@{#472665}
> Committed:
https://chromium.googlesource.com/chromium/src/+/027325f153ba7f269b197cac9b43...

TBR=thakis@chromium.org,hans@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=714769
==========

to

==========
Revert of Roll clang 301384:303273. (patchset #1 id:1 of
https://codereview.chromium.org/2884383004/ )

Reason for revert:
Speculative revert: This might have broken cc_unittests on Linux MSan:
https://build.chromium.org/p/chromium.memory/builders/Linux%20MSan%20Tests
(In fact, the same tests failed on the linux_chromium_msan_rel_ng right here.)

The failing tests are related to shader transpiling which uses ANGLE which uses
clang. Kind of a long shot, but nothing else looks related.

Original issue's description:
> Roll clang 301384:303273.
> 
> BUG=714769
> R=thakis@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2884383004 .
> Cr-Commit-Position: refs/heads/master@{#472665}
> Committed:
https://chromium.googlesource.com/chromium/src/+/027325f153ba7f269b197cac9b43...

TBR=thakis@chromium.org,hans@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=714769

Review-Url: https://codereview.chromium.org/2888363002
Cr-Commit-Position: refs/heads/master@{#472771}
Committed:
https://chromium.googlesource.com/chromium/src/+/d6dc38b8713ca8ac2fd49ee08f09...
==========

[commit-bot: I haz the power, 2017-05-18 11:55:39]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/d6dc38b8713ca8ac2fd49ee08f09...

[Marc Treib, 2017-05-18 14:13:34]

On 2017/05/18 11:55:39, commit-bot: I haz the power wrote:
> Committed patchset #1 (id:1) as
>
https://chromium.googlesource.com/chromium/src/+/d6dc38b8713ca8ac2fd49ee08f09...

The revert seems to have helped: The first build on Linux MSan that has it
(https://build.chromium.org/p/chromium.memory/builders/Linux%20MSan%20Tests/bu...)
passes cc_unittests again.