Fix GN configuration for inclusion of unwinding tables.

Fix GN configuration for inclusion of unwinding tables.

build/config/compiler/BUILD.gn was already selecting between -fno-unwind-tables
and -funwind-tables depending on whether it's an official build or not.
Duplicating this flag causes both -fno-unwind-tables and -funwind-tables
which results in unwind tables being included and a much larger shared
library.
BUG=580374
Committed: https://crrev.com/33ecd69e345149844bef8f1026aebcb5f38afcec
Cr-Commit-Position: refs/heads/master@{#371044}

[Yaron, 2016-01-22 19:01:56]

yfriedman@chromium.org changed reviewers:
+ brettw@chromium.org

[Yaron, 2016-01-22 19:01:56]

Brett: can you take a look? Andrew is OOO this week and next and this is needed
for official builds

[brettw, 2016-01-22 21:01:52]

lgtm

[Yaron, 2016-01-22 21:24:28]

The CQ bit was checked by yfriedman@chromium.org

[commit-bot: I haz the power, 2016-01-22 21:24:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1617213003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1617213003/1

[commit-bot: I haz the power, 2016-01-22 21:35:39]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-22 21:36:52]

Description was changed from

==========
Fix GN configuration for inclusion of unwinding tables.

build/config/compiler/BUILD.gn was already selecting between -fno-unwind-tables
and -funwind-tables depending on whether it's an official build or not.
Duplicating this flag causes both -fno-unwind-tables and -funwind-tables
which results in unwind tables being included and a much larger shared
library.
BUG=580374
==========

to

==========
Fix GN configuration for inclusion of unwinding tables.

build/config/compiler/BUILD.gn was already selecting between -fno-unwind-tables
and -funwind-tables depending on whether it's an official build or not.
Duplicating this flag causes both -fno-unwind-tables and -funwind-tables
which results in unwind tables being included and a much larger shared
library.
BUG=580374

Committed: https://crrev.com/33ecd69e345149844bef8f1026aebcb5f38afcec
Cr-Commit-Position: refs/heads/master@{#371044}
==========

[commit-bot: I haz the power, 2016-01-22 21:36:52]

Patchset 1 (id:??) landed as
https://crrev.com/33ecd69e345149844bef8f1026aebcb5f38afcec
Cr-Commit-Position: refs/heads/master@{#371044}