GN: Fix Visual Studio project build command

GN: Fix Visual Studio project build command

The previous solution didn't work for building projects with
non-default toolchains.
Now it calls ninja with the dependency output of a target
instead of the project name, this seems to work in all cases.

R=brettw@chromium.org, tmoniuszko@opera.com
BUG=

Committed: https://crrev.com/d8d1d8e78b428862455838efef25593c0f69a46a
Cr-Commit-Position: refs/heads/master@{#377277}

[brettw, 2016-02-23 18:59:00]

lgtm

[NGG, 2016-02-24 12:27:54]

The CQ bit was checked by ngg@ngg.hu

[commit-bot: I haz the power, 2016-02-24 12:28:42]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1723663006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1723663006/1

[commit-bot: I haz the power, 2016-02-24 13:05:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-02-24 13:06:58]

Description was changed from

==========
GN: Fix Visual Studio project build command

The previous solution didn't work for building projects with
non-default toolchains.
Now it calls ninja with the dependency output of a target
instead of the project name, this seems to work in all cases.

R=brettw@chromium.org, tmoniuszko@opera.com
BUG=
==========

to

==========
GN: Fix Visual Studio project build command

The previous solution didn't work for building projects with
non-default toolchains.
Now it calls ninja with the dependency output of a target
instead of the project name, this seems to work in all cases.

R=brettw@chromium.org, tmoniuszko@opera.com
BUG=

Committed: https://crrev.com/d8d1d8e78b428862455838efef25593c0f69a46a
Cr-Commit-Position: refs/heads/master@{#377277}
==========

[commit-bot: I haz the power, 2016-02-24 13:06:58]

Patchset 1 (id:??) landed as
https://crrev.com/d8d1d8e78b428862455838efef25593c0f69a46a
Cr-Commit-Position: refs/heads/master@{#377277}