Fieldtrial testing config for InvalidationsSkipUnsubscription

Bug: 1103604
Change-Id: I69d1d4d62de530c6ad0aaa83a5e1c09fd4ae2a3e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2637597
Commit-Queue: Caitlin Fischer <caitlinfischer@google.com>
Reviewed-by: Caitlin Fischer <caitlinfischer@google.com>
Cr-Commit-Position: refs/heads/master@{#844869}

testing/variations/fieldtrial_testing_config.json

@@ -3632,6 +3632,21 @@
             ]
         }
     ],
+    "InvalidationsSkipUnsubscription": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "InvalidationsSkipUnsubscription"
+                    ]
+                }
+            ]
+        }
+    ],
     "IsolatePasswordSites": [
         {
             "platforms": [