Settings reset prompt: Enable the feature for fieldtrial testing.

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 ae2982e470492e8a83d970343247d6ae83629b37..05682d527b468d2f99d8e6aa214bccf0e9e05ed2 100644
--- a/testing/variations/fieldtrial_testing_config.json
+++ b/testing/variations/fieldtrial_testing_config.json
@@ -2514,6 +2514,27 @@
             ]
         }
     ],
+    "SettingsResetPrompt": [
+        {
+            "platforms": [
+                "win"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "params": {
+                        "delay_before_prompt_seconds": "1",
+                        "domain_hashes": "{\"c027a731da03fee479b2ba00b3afe74b3fd9190f0622755db8ffa504efbde66e\":\"3\"}",
+                        "prompt_wave": "20170101",
+                        "time_between_prompts_seconds": "3600"
+                    },
+                    "enable_features": [
+                        "SettingsResetPrompt"
+                    ]
+                }
+            ]
+        }
+    ],
     "SignInPasswordPromo": [
         {
             "platforms": [