Add field trial testing configurations for go/chrome-no-searchdomaincheck features

Bug: 825255
Change-Id: Id5d24421a3bda868fec711dff50aeab4b13eecd8
Reviewed-on: https://chromium-review.googlesource.com/1110368Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Commit-Queue: Quentin Fiard <qfiard@google.com>
Cr-Commit-Position: refs/heads/master@{#569634}

testing/variations/fieldtrial_testing_config.json

@@ -1390,6 +1390,25 @@
             ]
         }
     ],
+    "EmitGoogleSearchDomainMixingMetrics": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "linux",
+                "mac",
+                "win"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "EmitGoogleSearchDomainMixingMetrics"
+                    ]
+                }
+            ]
+        }
+    ],
     "EnableAppContainer": [
         {
             "platforms": [
@@ -2425,6 +2444,25 @@
             ]
         }
     ],
+    "NoSearchDomainCheck": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "linux",
+                "mac",
+                "win"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "NoSearchDomainCheck"
+                    ]
+                }
+            ]
+        }
+    ],
     "OfferUploadCreditCards": [
         {
             "platforms": [