Flip win_chromium_x64_rel_ng to MB, GN

Flip win_chromium_x64_rel_ng to MB, GN

This flips the win_chromium_x64_rel_ng bot from mirroring 'Win x64 Builder'
and 'Win 7 Tests x64 (1)' to mirroring 'Win x64 GN'; the net result
is that we will get x64 GN coverage on the CQ (but lose GYP coverage).
This is deemed to be an acceptable tradeoff and a good thing.

R=brucedawson@chromium.org, jam@chromium.org
BUG=581899

[Dirk Pranke, 2016-02-22 00:11:32]

Please take a look, but note that this CL should not land until
https://codereview.chromium.org/1720763002/ (the src-side change) does and we
have test parity between the bots.

[jam, 2016-02-22 16:10:04]

lgtm

[brucedawson, 2016-02-22 19:01:35]

On 2016/02/22 16:10:04, jam wrote:
> lgtm

Doesn't this change also depend on landing the leveldb warning fix in
https://github.com/google/leveldb/pull/348 and rolling DEPS?

[Dirk Pranke, 2016-02-22 21:13:11]

On 2016/02/22 19:01:35, brucedawson wrote:
> On 2016/02/22 16:10:04, jam wrote:
> > lgtm
> 
> Doesn't this change also depend on landing the leveldb warning fix in
> https://github.com/google/leveldb/pull/348 and rolling DEPS?

No, since we're not building and running that test on this bot.

[brucedawson, 2016-02-22 21:23:45]

What does MB mean in this context? Consider expanding TLA in description as 'MB'
is not a usefully searchable term.

lgtm

[Dirk Pranke, 2016-02-22 21:39:14]

On 2016/02/22 21:23:45, brucedawson wrote:
> What does MB mean in this context? Consider expanding TLA in description as
'MB'
> is not a usefully searchable term.

MB is a wrapper script that we use to control what flags are passed to GYP or GN
and
whch tool to use via a source-side config file:

https://chromium.googlesource.com/chromium/src/+/master/tools/mb

It also implements a bunch of stuff for analyze and handling swarming.

(searching for 'chromium mb' produces good results :).

[Dirk Pranke, 2016-04-01 23:14:26]

Description was changed from

==========
Flip win_chromium_x64_rel_ng to MB, GN

This flips the win_chromium_x64_rel_ng bot from mirroring 'Win x64 Builder'
and 'Win 7 Tests x64 (1)' to mirroring 'Win x64 GN'; the net result
is that we will get x64 GN coverage on the CQ (but lose GYP coverage).
This is deemed to be an acceptable tradeoff and a good thing.

R=brucedawson@chromium.org, jam@chromium.org
BUG=581899
==========

to

==========
Flip win_chromium_x64_rel_ng to MB, GN

This flips the win_chromium_x64_rel_ng bot from mirroring 'Win x64 Builder'
and 'Win 7 Tests x64 (1)' to mirroring 'Win x64 GN'; the net result
is that we will get x64 GN coverage on the CQ (but lose GYP coverage).
This is deemed to be an acceptable tradeoff and a good thing.

R=brucedawson@chromium.org, jam@chromium.org
BUG=581899
==========

[Dirk Pranke, 2016-04-01 23:14:47]

closing ... I plan to do this by flipping the main bots over to GN instead in a
week or so.