Add non-CQ builders as CQ experiments to validate them via luci-migration app

R=machenbach@chromium.org

No-Try: true
Bug: chromium:747960
Change-Id: I01f6c7e074e7a69f33d1d989460c36a9077a887d
Reviewed-on: https://chromium-review.googlesource.com/806154
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49869}

infra/config/cq.cfg

@@ -119,6 +119,83 @@ verifiers {
         name: "v8_linux64_sanitizer_coverage_rel"
         experiment_percentage: 100
       }
+
+      # Experimental builders added to test them in luci-migration app before
+      # migrating them to LUCI. Should be removed after migrating to LUCI. To
+      # avoid using too much capacity, only a few of the builders should be on
+      # CQ at any given time, thus some of the builders below are commented.
+      builders {
+        name: "v8_linux64_tsan_rel"
+        experiment_percentage: 10
+      }
+      builders {
+        name: "v8_linux_nosnap_rel"
+        experiment_percentage: 10
+      }
+      builders {
+        name: "v8_linux_gc_stress_dbg"
+        experiment_percentage: 10
+      }
+      builders {
+        name: "v8_mac_dbg"
+        experiment_percentage: 10
+      }
+      builders {
+        name: "v8_linux_nosnap_dbg"
+        experiment_percentage: 10
+      }
+      builders {
+        name: "v8_win64_dbg"
+        experiment_percentage: 10
+      }
+      builders {
+        name: "v8_mac_gc_stress_dbg"
+        experiment_percentage: 10
+      }
+      builders {
+        name: "v8_mac64_dbg"
+        experiment_percentage: 10
+      }
+      builders {
+        name: "v8_linux_gcc_rel"
+        experiment_percentage: 10
+      }
+      builders {
+        name: "v8_linux_arm64_dbg"
+        experiment_percentage: 10
+      }
+      #builders {
+      #  name: "v8_linux64_ubsan_rel_ng"
+      #  experiment_percentage: 10
+      #}
+      #builders {
+      #  name: "v8_linux_noi18n_rel_ng"
+      #  experiment_percentage: 10
+      #}
+      #builders {
+      #  name: "v8_win_asan_rel_ng"
+      #  experiment_percentage: 10
+      #}
+      #builders {
+      #  name: "v8_linux_arm64_gc_stress_dbg"
+      #  experiment_percentage: 10
+      #}
+      #builders {
+      #  name: "v8_linux_arm_dbg"
+      #  experiment_percentage: 10
+      #}
+      #builders {
+      #  name: "v8_mac64_asan_rel"
+      #  experiment_percentage: 10
+      #}
+      #builders {
+      #  name: "v8_linux64_msan_rel"
+      #  experiment_percentage: 10
+      #}
+      #builders {
+      #  name: "v8_win_dbg"
+      #  experiment_percentage: 10
+      #}
     }
     buckets {
       name: "master.tryserver.chromium.win"