Revert of Fix repeated "-Wunknown-pragmas -Wno-error=unknown-pragmas".

Revert of Fix repeated "-Wunknown-pragmas -Wno-error=unknown-pragmas". (patchset #2 id:40001 of https://codereview.chromium.org/2717493002/ )

Reason for revert:
Looks like this CL is breaking Android Compile on chromium.perf.
https://bugs.chromium.org/p/chromium/issues/detail?id=695534

Original issue's description:
> Fix repeated "-Wunknown-pragmas -Wno-error=unknown-pragmas".
> 
> As gn only deduplicate the configs but not the configs' flags, the
> flags "-Wunknown-pragmas -Wno-error=unknown-pragmas" where repeated
> for each dependent target using the "grit" template. Instead add a
> single config adding those flag and reference it from the "grit"
> template to avoid the duplicates.
> 
> BUG=None
> 
> Review-Url: https://codereview.chromium.org/2717493002
> Cr-Commit-Position: refs/heads/master@{#452543}
> Committed: https://chromium.googlesource.com/chromium/src/+/f673f4c59c985aa8ddfab2b3821c42af25d915e4

TBR=lizeb@chromium.org,scottmg@chromium.org,sdefresne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=None

Review-Url: https://codereview.chromium.org/2708923007
Cr-Commit-Position: refs/heads/master@{#452595}
Committed: https://chromium.googlesource.com/chromium/src/+/b6c06ef04f90d35dcbdd08c083befa94152c1320

[prasadv, 2017-02-23 19:46:01]

The CQ bit was checked by prasadv@chromium.org

[prasadv, 2017-02-23 19:46:01]

Created Revert of Fix repeated "-Wunknown-pragmas -Wno-error=unknown-pragmas".

[commit-bot: I haz the power, 2017-02-23 19:46:39]

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, 2017-02-23 19:56:58]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487879161339720, "parent_rev":
"e5794518fc7183865775f5c978120f356b5f270e", "commit_rev":
"b6c06ef04f90d35dcbdd08c083befa94152c1320"}

[commit-bot: I haz the power, 2017-02-23 19:57:44]

Description was changed from

==========
Revert of Fix repeated "-Wunknown-pragmas -Wno-error=unknown-pragmas". (patchset
#2 id:40001 of https://codereview.chromium.org/2717493002/ )

Reason for revert:
Looks like this CL is breaking Android Compile on chromium.perf.
https://bugs.chromium.org/p/chromium/issues/detail?id=695534

Original issue's description:
> Fix repeated "-Wunknown-pragmas -Wno-error=unknown-pragmas".
> 
> As gn only deduplicate the configs but not the configs' flags, the
> flags "-Wunknown-pragmas -Wno-error=unknown-pragmas" where repeated
> for each dependent target using the "grit" template. Instead add a
> single config adding those flag and reference it from the "grit"
> template to avoid the duplicates.
> 
> BUG=None
> 
> Review-Url: https://codereview.chromium.org/2717493002
> Cr-Commit-Position: refs/heads/master@{#452543}
> Committed:
https://chromium.googlesource.com/chromium/src/+/f673f4c59c985aa8ddfab2b3821c...

TBR=lizeb@chromium.org,scottmg@chromium.org,sdefresne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=None
==========

to

==========
Revert of Fix repeated "-Wunknown-pragmas -Wno-error=unknown-pragmas". (patchset
#2 id:40001 of https://codereview.chromium.org/2717493002/ )

Reason for revert:
Looks like this CL is breaking Android Compile on chromium.perf.
https://bugs.chromium.org/p/chromium/issues/detail?id=695534

Original issue's description:
> Fix repeated "-Wunknown-pragmas -Wno-error=unknown-pragmas".
> 
> As gn only deduplicate the configs but not the configs' flags, the
> flags "-Wunknown-pragmas -Wno-error=unknown-pragmas" where repeated
> for each dependent target using the "grit" template. Instead add a
> single config adding those flag and reference it from the "grit"
> template to avoid the duplicates.
> 
> BUG=None
> 
> Review-Url: https://codereview.chromium.org/2717493002
> Cr-Commit-Position: refs/heads/master@{#452543}
> Committed:
https://chromium.googlesource.com/chromium/src/+/f673f4c59c985aa8ddfab2b3821c...

TBR=lizeb@chromium.org,scottmg@chromium.org,sdefresne@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=None

Review-Url: https://codereview.chromium.org/2708923007
Cr-Commit-Position: refs/heads/master@{#452595}
Committed:
https://chromium.googlesource.com/chromium/src/+/b6c06ef04f90d35dcbdd08c083be...
==========

[commit-bot: I haz the power, 2017-02-23 19:57:45]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/b6c06ef04f90d35dcbdd08c083be...

[sdefresne, 2017-02-24 09:48:42]

On 2017/02/23 19:57:45, commit-bot: I haz the power wrote:
> Committed patchset #1 (id:1) as
>
https://chromium.googlesource.com/chromium/src/+/b6c06ef04f90d35dcbdd08c083be...

lgtm

Thank you for reverting.