Re-enable win_angle_x64_dbg_ng as a trybot target.

infra/config/cq.cfg

@@ -17,6 +17,7 @@ verifiers {
       builders { name: "win_angle_rel_ng" }
       builders { name: "win_angle_dbg_ng" }
       builders { name: "win_angle_x64_rel_ng" }
+      builders { name: "win_angle_x64_dbg_ng" }
     }
   }
 }