Revert of Flip official Win builders to GN (on trunk).

Revert of Flip official Win builders to GN (on trunk). (patchset #1 id:1 of https://codereview.chromium.org/2082823002/ )

Reason for revert:
Didn't work - see crbug.com/621776.

Original issue's description:
> Flip official Win builders to GN (on trunk).
>
> This also flips the continuous official builders, but because those
> are pulling MB configs from versioned code, this'll only actually
> affect the trunk builder for now. When we branch, the branch builders
> will also start to pick up these changes.
>
> R=brettw@chromium.org, brucedawson@chromium.org, scottmg@chromium.org
> BUG=605318
>
> Committed: https://crrev.com/44265dd04f839147986041fa9c32e9b3c758aebf
> Cr-Commit-Position: refs/heads/master@{#400827}

TBR=brettw@chromium.org,brucedawson@chromium.org,scottmg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=605318
Committed: https://crrev.com/217fb93cfc4e41ca74f55373834d9b9630842a41
Cr-Commit-Position: refs/heads/master@{#400887}

[Dirk Pranke, 2016-06-21 03:54:36]

The CQ bit was checked by dpranke@chromium.org

[Dirk Pranke, 2016-06-21 03:54:36]

Created Revert of Flip official Win builders to GN (on trunk).

[commit-bot: I haz the power, 2016-06-21 03:54:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2077353003/1

[commit-bot: I haz the power, 2016-06-21 03:55:36]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-21 03:57:54]

Description was changed from

==========
Revert of Flip official Win builders to GN (on trunk). (patchset #1 id:1 of
https://codereview.chromium.org/2082823002/ )

Reason for revert:
Didn't work - see crbug.com/621776.

Original issue's description:
> Flip official Win builders to GN (on trunk).
> 
> This also flips the continuous official builders, but because those
> are pulling MB configs from versioned code, this'll only actually
> affect the trunk builder for now. When we branch, the branch builders
> will also start to pick up these changes.
> 
> R=brettw@chromium.org, brucedawson@chromium.org, scottmg@chromium.org
> BUG=605318
> 
> Committed: https://crrev.com/44265dd04f839147986041fa9c32e9b3c758aebf
> Cr-Commit-Position: refs/heads/master@{#400827}

TBR=brettw@chromium.org,brucedawson@chromium.org,scottmg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=605318
==========

to

==========
Revert of Flip official Win builders to GN (on trunk). (patchset #1 id:1 of
https://codereview.chromium.org/2082823002/ )

Reason for revert:
Didn't work - see crbug.com/621776.

Original issue's description:
> Flip official Win builders to GN (on trunk).
>
> This also flips the continuous official builders, but because those
> are pulling MB configs from versioned code, this'll only actually
> affect the trunk builder for now. When we branch, the branch builders
> will also start to pick up these changes.
>
> R=brettw@chromium.org, brucedawson@chromium.org, scottmg@chromium.org
> BUG=605318
>
> Committed: https://crrev.com/44265dd04f839147986041fa9c32e9b3c758aebf
> Cr-Commit-Position: refs/heads/master@{#400827}

TBR=brettw@chromium.org,brucedawson@chromium.org,scottmg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=605318

Committed: https://crrev.com/217fb93cfc4e41ca74f55373834d9b9630842a41
Cr-Commit-Position: refs/heads/master@{#400887}
==========

[commit-bot: I haz the power, 2016-06-21 03:57:55]

Patchset 1 (id:??) landed as
https://crrev.com/217fb93cfc4e41ca74f55373834d9b9630842a41
Cr-Commit-Position: refs/heads/master@{#400887}