Revert "Remove win10_chromium_x64_rel_ng from the CQ"

This reverts commit 60b53b5d.

Reason for revert: Bot is drained, can re-add to CQ. 

Original change's description:
> Remove win10_chromium_x64_rel_ng from the CQ
> 
> This bot is totally broken at the moment. Remove it so it doesn't block
> CQ.
> 
> TBR=jbudorick
> NOTRY=true
> 
> Bug: 899908
> Change-Id: Ie6eca4c1bf8a67821e5a6570a59255fc6a87f54d
> Reviewed-on: https://chromium-review.googlesource.com/c/1306396
> Commit-Queue: Stephen Martinis <martiniss@chromium.org>
> Reviewed-by: John Budorick <jbudorick@chromium.org>
> Reviewed-by: Stephen Martinis <martiniss@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#603611}

TBR=martiniss@chromium.org,jbudorick@chromium.org

Change-Id: I55af5ee2c7d1255f10de817a4f9a548793989a21
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 899908
Reviewed-on: https://chromium-review.googlesource.com/c/1306659Reviewed-by: Stephen Martinis <martiniss@chromium.org>
Commit-Queue: Stephen Martinis <martiniss@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603689}

infra/config/branch/cq.cfg

@@ -173,8 +173,7 @@ verifiers {
         path_regexp: "ui/gl/.+"
       }
       builders { name: "win-libfuzzer-asan-rel" }
-      # TODO(martiniss): Re-add to CQ once outage is over. See crbug.com/899908
-      # builders { name: "win10_chromium_x64_rel_ng" }
+      builders { name: "win10_chromium_x64_rel_ng" }
       builders {
         name: "win7_chromium_rel_loc_exp"
         experiment_percentage: 20