[test_runner] Better calibrate the sanitizer timeout multipliers.

Bug: #61593
Change-Id: I65d0141413d537862ba79248105db1b90ee8a478
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/452887
Commit-Queue: Ryan Macnak <[email protected]>
Reviewed-by: Alexander Aprelev <[email protected]>

Author: rmacnak-google

pkg/test_runner/lib/src/runtime_configuration.dart

@@ -369,8 +369,19 @@ class DartVmRuntimeConfiguration extends RuntimeConfiguration {
     if (isReload) {
       multiplier *= 2;
     }
-    if (_configuration.sanitizer != Sanitizer.none) {
-      multiplier *= 4;
+    switch (_configuration.sanitizer) {
+      case Sanitizer.none:
+      case Sanitizer.lsan:
+      case Sanitizer.ubsan:
+        multiplier *= 1;
+        break;
+      case Sanitizer.asan:
+      case Sanitizer.msan:
+        multiplier *= 2;
+        break;
+      case Sanitizer.tsan:
+        multiplier *= 6;
+        break;
     }
     if (_configuration.rr) {
       multiplier *= 2;