GN: Respect system libdir whenever building with the traget sysroot

GN: Respect system libdir whenever building with the traget sysroot

Nacl uses its own toolchain with the target sysroot.
System libdir should be respected with that toolchain too.

BUG=606432
Committed: https://crrev.com/a82baa163c5969ef8f4733ecfeb5fe20cf51cd13
Cr-Commit-Position: refs/heads/master@{#389830}

[hashimoto, 2016-04-26 04:52:59]

hashimoto@chromium.org changed reviewers:
+ dpranke@chromium.org

[stevenjb, 2016-04-26 17:52:15]

stevenjb@chromium.org changed reviewers:
+ brettw@chromium.org, stevenjb@chromium.org

[stevenjb, 2016-04-26 17:52:15]

+brettw@

Currently this is blocking cros developers switching to GN (and I don't want to
discourage devs from switching...)

[Dirk Pranke, 2016-04-26 18:19:42]

lgtm

[stevenjb, 2016-04-26 18:25:35]

The CQ bit was checked by stevenjb@chromium.org

[commit-bot: I haz the power, 2016-04-26 18:25:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1914103002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1914103002/1

[commit-bot: I haz the power, 2016-04-26 18:57:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-26 18:59:33]

Description was changed from

==========
GN: Respect system libdir whenever building with the traget sysroot

Nacl uses its own toolchain with the target sysroot.
System libdir should be respected with that toolchain too.

BUG=606432
==========

to

==========
GN: Respect system libdir whenever building with the traget sysroot

Nacl uses its own toolchain with the target sysroot.
System libdir should be respected with that toolchain too.

BUG=606432

Committed: https://crrev.com/a82baa163c5969ef8f4733ecfeb5fe20cf51cd13
Cr-Commit-Position: refs/heads/master@{#389830}
==========

[commit-bot: I haz the power, 2016-04-26 18:59:34]

Patchset 1 (id:??) landed as
https://crrev.com/a82baa163c5969ef8f4733ecfeb5fe20cf51cd13
Cr-Commit-Position: refs/heads/master@{#389830}