Add PredictivePrefetchingAllowedOnAllConnectionTypes to field trial config

Bug: 907236
Change-Id: Id7267ce5a3edec725375738ba069d58431102841
Reviewed-on: https://chromium-review.googlesource.com/c/1394735Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Tarun Bansal <tbansal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619788}

testing/variations/fieldtrial_testing_config.json

@@ -3628,6 +3628,21 @@
             ]
         }
     ],
+    "PredictivePrefetchingAllowedOnAllConnectionTypes": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "PredictivePrefetchingAllowedOnAllConnectionTypes",
+                    "enable_features": [
+                        "PredictivePrefetchingAllowedOnAllConnectionTypes"
+                    ]
+                }
+            ]
+        }
+    ],
     "PreviewsClientLoFi": [
         {
             "platforms": [