[tools] Replace migrated non-CQ LUCI experiments with new ones

R=machenbach@chromium.org

No-Try: true
Bug: chromium:747960
Change-Id: I45990490545827e7c36b2fccd89f37c34ab228a1
Reviewed-on: https://chromium-review.googlesource.com/822393
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50229}

infra/config/cq.cfg

@@ -125,17 +125,9 @@ verifiers {
       # 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_mac_dbg"
+        name: "v8_mac_gc_stress_dbg"
         experiment_percentage: 10
       }
-      builders {
-        name: "v8_linux_nosnap_dbg"
-        experiment_percentage: 10
-      }
-      #builders {
-      #  name: "v8_mac_gc_stress_dbg"
-      #  experiment_percentage: 10
-      #}
       #builders {
       #  name: "v8_mac64_dbg"
       #  experiment_percentage: 10
@@ -168,10 +160,10 @@ verifiers {
       #  name: "v8_mac64_asan_rel"
       #  experiment_percentage: 10
       #}
-      #builders {
-      #  name: "v8_linux64_msan_rel"
-      #  experiment_percentage: 10
-      #}
+      builders {
+        name: "v8_linux64_msan_rel"
+        experiment_percentage: 10
+      }
       #builders {
       #  name: "v8_win_dbg"
       #  experiment_percentage: 10