Reland of clang/win: Stop passing -Qunused-arguments.

Reland of clang/win: Stop passing -Qunused-arguments. (patchset #1 id:1 of https://codereview.chromium.org/1846633004/ )

Reason for revert:
Wasn't the culprit for that problem.

Original issue's description:
> Revert of clang/win: Stop passing -Qunused-arguments. (patchset #6 id:100001 of https://codereview.chromium.org/1828543003/ )
>
> Reason for revert:
> Speculative; official builds mysteriously exploded (crbug.com/599186) and this is on the blame list...
>
> Original issue's description:
> > clang/win: Stop passing -Qunused-arguments.
> >
> > All flags except /GS and /GL are accepted by clang-cl by now. To be able
> > to turn on -Qunused-arguments, don't pass /GS and /GL in clang builds
> > for now.
> >
> > BUG=504658, 598772, 598767
> > NOTRY=true
> >
> > Committed: https://crrev.com/de51a84b69b5b1dd458c65f6aaf2335f81b57785
> > Cr-Commit-Position: refs/heads/master@{#383954}
> >
> > R=hans@chromium.org
> >
> > Committed: https://crrev.com/cb19a4e78e9c472914680235c75f2b9afe554b20
> > Cr-Commit-Position: refs/heads/master@{#384004}
>
> TBR=hans@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=504658, 598772, 598767
>
> Committed: https://crrev.com/12edf36d8d15b8f517b750b6dc1eb12e4d21f681
> Cr-Commit-Position: refs/heads/master@{#384033}

TBR=hans@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=504658, 598772, 598767
Committed: https://crrev.com/c5670cbd43bdeb6f5e03b36c7ac20b7d239f1c96
Cr-Commit-Position: refs/heads/master@{#384059}

[Nico, 2016-03-30 19:42:40]

Created Reland of clang/win: Stop passing -Qunused-arguments.

[commit-bot: I haz the power, 2016-03-30 19:43:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1844793003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1844793003/1

[commit-bot: I haz the power, 2016-03-30 19:43:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-30 20:05:33]

Description was changed from

==========
Reland of clang/win: Stop passing -Qunused-arguments. (patchset #1 id:1 of
https://codereview.chromium.org/1846633004/ )

Reason for revert:
Wasn't the culprit for that problem.

Original issue's description:
> Revert of clang/win: Stop passing -Qunused-arguments. (patchset #6 id:100001
of https://codereview.chromium.org/1828543003/ )
> 
> Reason for revert:
> Speculative; official builds mysteriously exploded (crbug.com/599186) and this
is on the blame list...
> 
> Original issue's description:
> > clang/win: Stop passing -Qunused-arguments.
> >
> > All flags except /GS and /GL are accepted by clang-cl by now. To be able
> > to turn on -Qunused-arguments, don't pass /GS and /GL in clang builds
> > for now.
> >
> > BUG=504658,598772,598767
> > NOTRY=true
> >
> > Committed: https://crrev.com/de51a84b69b5b1dd458c65f6aaf2335f81b57785
> > Cr-Commit-Position: refs/heads/master@{#383954}
> >
> > R=hans@chromium.org
> >
> > Committed: https://crrev.com/cb19a4e78e9c472914680235c75f2b9afe554b20
> > Cr-Commit-Position: refs/heads/master@{#384004}
> 
> TBR=hans@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=504658,598772,598767
> 
> Committed: https://crrev.com/12edf36d8d15b8f517b750b6dc1eb12e4d21f681
> Cr-Commit-Position: refs/heads/master@{#384033}

TBR=hans@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=504658,598772,598767
==========

to

==========
Reland of clang/win: Stop passing -Qunused-arguments. (patchset #1 id:1 of
https://codereview.chromium.org/1846633004/ )

Reason for revert:
Wasn't the culprit for that problem.

Original issue's description:
> Revert of clang/win: Stop passing -Qunused-arguments. (patchset #6 id:100001
of https://codereview.chromium.org/1828543003/ )
>
> Reason for revert:
> Speculative; official builds mysteriously exploded (crbug.com/599186) and this
is on the blame list...
>
> Original issue's description:
> > clang/win: Stop passing -Qunused-arguments.
> >
> > All flags except /GS and /GL are accepted by clang-cl by now. To be able
> > to turn on -Qunused-arguments, don't pass /GS and /GL in clang builds
> > for now.
> >
> > BUG=504658,598772,598767
> > NOTRY=true
> >
> > Committed: https://crrev.com/de51a84b69b5b1dd458c65f6aaf2335f81b57785
> > Cr-Commit-Position: refs/heads/master@{#383954}
> >
> > R=hans@chromium.org
> >
> > Committed: https://crrev.com/cb19a4e78e9c472914680235c75f2b9afe554b20
> > Cr-Commit-Position: refs/heads/master@{#384004}
>
> TBR=hans@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=504658,598772,598767
>
> Committed: https://crrev.com/12edf36d8d15b8f517b750b6dc1eb12e4d21f681
> Cr-Commit-Position: refs/heads/master@{#384033}

TBR=hans@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=504658,598772,598767

Committed: https://crrev.com/c5670cbd43bdeb6f5e03b36c7ac20b7d239f1c96
Cr-Commit-Position: refs/heads/master@{#384059}
==========

[commit-bot: I haz the power, 2016-03-30 20:05:34]

Patchset 1 (id:??) landed as
https://crrev.com/c5670cbd43bdeb6f5e03b36c7ac20b7d239f1c96
Cr-Commit-Position: refs/heads/master@{#384059}