Add missing ANGLE Windows trybots to buildbuckets

BUG=chromium:815092

Change-Id: I63d8a6f3987769b3c16a2a8134e46acb044514b2
Reviewed-on: https://chromium-review.googlesource.com/1005420Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549637}

infra/config/global/cr-buildbucket.cfg

@@ -1218,7 +1218,9 @@ buckets {
     builders { mixins: "win-angle-try" name: "win_angle_rel_ng" }
     builders { mixins: "win-angle-try" name: "win_angle_compile_x64_rel_ng" }
     builders { mixins: "win-angle-try" name: "win_angle_compile_x64_dbg_ng" }
+    builders { mixins: "win-angle-try" name: "win_angle_compile_dbg_ng" }
     builders { mixins: "win-angle-try" name: "win_angle_deqp_rel_ng" }
+    builders { mixins: "win-angle-try" name: "win_angle_x64_rel_ng" }
     builders { mixins: "win-angle-try" name: "win_angle_x64_deqp_rel_ng" }
     builders { mixins: "win-try" name: "win_archive" }
     builders { mixins: "win-try" name: "win_chrome_official" }