Add NoStatePrefetch to field_trial_testing_config.json

testing/variations/fieldtrial_testing_config.json

Index: testing/variations/fieldtrial_testing_config.json
diff --git a/testing/variations/fieldtrial_testing_config.json b/testing/variations/fieldtrial_testing_config.json
index 539104640b7ab1cf7ac9c4f08718bbac4a74618e..77935796168aa8192e00db0b9d9d6b1d8b0130c3 100644
--- a/testing/variations/fieldtrial_testing_config.json
+++ b/testing/variations/fieldtrial_testing_config.json
@@ -1362,6 +1362,28 @@
             ]
         }
     ],
+    "NoStatePrefetchValidation": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "linux",
+                "mac",
+                "win"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "params": {
+                        "mode": "no_state_prefetch"
+                    },
+                    "enable_features": [
+                        "NoStatePrefetch"
+                    ]
+                }
+            ]
+        }
+    ],
     "OfferUploadCreditCards": [
         {
             "platforms": [