Update Skia GN build to use the new .gni file.

Update Skia GN build to use the new .gni file.

This file is provided by the Skia repo so the GN Chrome build doesn't have
to make assumptions about the location and layout of Skia's GYP files.

Committed: https://crrev.com/cf9457edb7c734f509dd12149acd78410c518570
Cr-Commit-Position: refs/heads/master@{#416297}

[brettw, 2016-09-01 20:40:28]

style

[brettw, 2016-09-01 20:40:38]

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

[mtklein_C, 2016-09-01 20:56:38]

lgtm

[brettw, 2016-09-02 16:52:12]

The CQ bit was checked by brettw@chromium.org

[commit-bot: I haz the power, 2016-09-02 16:52:35]

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, 2016-09-02 17:54:42]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-09-02 17:56:16]

Description was changed from

==========
Update Skia GN build to use the new .gni file.

This file is provided by the Skia repo so the GN Chrome build doesn't have
to make assumptions about the location and layout of Skia's GYP files.
==========

to

==========
Update Skia GN build to use the new .gni file.

This file is provided by the Skia repo so the GN Chrome build doesn't have
to make assumptions about the location and layout of Skia's GYP files.

Committed: https://crrev.com/cf9457edb7c734f509dd12149acd78410c518570
Cr-Commit-Position: refs/heads/master@{#416297}
==========

[commit-bot: I haz the power, 2016-09-02 17:56:19]

Patchset 2 (id:??) landed as
https://crrev.com/cf9457edb7c734f509dd12149acd78410c518570
Cr-Commit-Position: refs/heads/master@{#416297}