Revert of Implement arflags in the GN build.

Revert of Implement arflags in the GN build. (patchset #4 id:60001 of https://codereview.chromium.org/1907403002/ )

Reason for revert:
As with the previous attempts to land this cl, android and GPU builders are failing compile with OOM errors:
https://bugs.chromium.org/p/chromium/issues/detail?id=607673

Original issue's description:
> Implement arflags in the GN build.
>
> This flag was recently added in GN. This patch hooks it up to the toolchains
> and moves some flags to use it that previously had to be hardcoded on the
> tool command itself.
>
> Remove concurrent_links variable from gcc_toolchain which was unused.
>
> BUG=598599
> Reland of http://crrev.com/1909163002 with no changes (now that a GN binary push to fix the bug has gone in) which was a reland of http://crrev.com/1896163003 with fix.

TBR=brucedawson@chromium.org,brettw@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=598599
Committed: https://crrev.com/500a5624ab6d616b503bf75449cfc772b9c3d2c2
Cr-Commit-Position: refs/heads/master@{#390545}

[bpastene, 2016-04-29 00:33:44]

Created Revert of Implement arflags in the GN build.

[commit-bot: I haz the power, 2016-04-29 00:34:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1930293002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1930293002/1

[commit-bot: I haz the power, 2016-04-29 00:35:00]

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

[commit-bot: I haz the power, 2016-04-29 00:35:01]

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.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[ghost stip (do not use), 2016-04-29 00:37:37]

stip@chromium.org changed reviewers:
+ stip@chromium.org

[ghost stip (do not use), 2016-04-29 00:37:38]

lgtm

[bpastene, 2016-04-29 00:37:53]

The CQ bit was checked by bpastene@chromium.org

[commit-bot: I haz the power, 2016-04-29 00:38:58]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1930293002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1930293002/1

[commit-bot: I haz the power, 2016-04-29 00:39:38]

Description was changed from

==========
Revert of Implement arflags in the GN build. (patchset #4 id:60001 of
https://codereview.chromium.org/1907403002/ )

Reason for revert:
As with the previous attempts to land this cl, android and GPU builders are
failing compile with OOM errors:
https://bugs.chromium.org/p/chromium/issues/detail?id=607673

Original issue's description:
> Implement arflags in the GN build.
> 
> This flag was recently added in GN. This patch hooks it up to the toolchains
> and moves some flags to use it that previously had to be hardcoded on the
> tool command itself.
> 
> Remove concurrent_links variable from gcc_toolchain which was unused.
> 
> BUG=598599
> Reland of http://crrev.com/1909163002 with no changes (now that a GN binary
push to fix the bug has gone in) which was a reland of
http://crrev.com/1896163003 with fix.

TBR=brucedawson@chromium.org,brettw@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=598599
==========

to

==========
Revert of Implement arflags in the GN build. (patchset #4 id:60001 of
https://codereview.chromium.org/1907403002/ )

Reason for revert:
As with the previous attempts to land this cl, android and GPU builders are
failing compile with OOM errors:
https://bugs.chromium.org/p/chromium/issues/detail?id=607673

Original issue's description:
> Implement arflags in the GN build.
> 
> This flag was recently added in GN. This patch hooks it up to the toolchains
> and moves some flags to use it that previously had to be hardcoded on the
> tool command itself.
> 
> Remove concurrent_links variable from gcc_toolchain which was unused.
> 
> BUG=598599
> Reland of http://crrev.com/1909163002 with no changes (now that a GN binary
push to fix the bug has gone in) which was a reland of
http://crrev.com/1896163003 with fix.

TBR=brucedawson@chromium.org,brettw@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=598599
==========

[commit-bot: I haz the power, 2016-04-29 00:39:39]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-30 17:22:59]

Patchset 1 (id:??) landed as
https://crrev.com/500a5624ab6d616b503bf75449cfc772b9c3d2c2
Cr-Commit-Position: refs/heads/master@{#390545}

[commit-bot: I haz the power, 2016-04-30 17:58:33]

Description was changed from

==========
Revert of Implement arflags in the GN build. (patchset #4 id:60001 of
https://codereview.chromium.org/1907403002/ )

Reason for revert:
As with the previous attempts to land this cl, android and GPU builders are
failing compile with OOM errors:
https://bugs.chromium.org/p/chromium/issues/detail?id=607673

Original issue's description:
> Implement arflags in the GN build.
> 
> This flag was recently added in GN. This patch hooks it up to the toolchains
> and moves some flags to use it that previously had to be hardcoded on the
> tool command itself.
> 
> Remove concurrent_links variable from gcc_toolchain which was unused.
> 
> BUG=598599
> Reland of http://crrev.com/1909163002 with no changes (now that a GN binary
push to fix the bug has gone in) which was a reland of
http://crrev.com/1896163003 with fix.

TBR=brucedawson@chromium.org,brettw@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=598599
==========

to

==========
Revert of Implement arflags in the GN build. (patchset #4 id:60001 of
https://codereview.chromium.org/1907403002/ )

Reason for revert:
As with the previous attempts to land this cl, android and GPU builders are
failing compile with OOM errors:
https://bugs.chromium.org/p/chromium/issues/detail?id=607673

Original issue's description:
> Implement arflags in the GN build.
>
> This flag was recently added in GN. This patch hooks it up to the toolchains
> and moves some flags to use it that previously had to be hardcoded on the
> tool command itself.
>
> Remove concurrent_links variable from gcc_toolchain which was unused.
>
> BUG=598599
> Reland of http://crrev.com/1909163002 with no changes (now that a GN binary
push to fix the bug has gone in) which was a reland of
http://crrev.com/1896163003 with fix.

TBR=brucedawson@chromium.org,brettw@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=598599

Committed: https://crrev.com/500a5624ab6d616b503bf75449cfc772b9c3d2c2
Cr-Commit-Position: refs/heads/master@{#390545}
==========