Download auto-resumption testing config

Change-Id: I262b617cb35221db0f7dbae73b03502bf6257341
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1676946
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Cr-Commit-Position: refs/heads/master@{#680512}

testing/variations/fieldtrial_testing_config.json

@@ -1918,6 +1918,21 @@
             ]
         }
     ],
+    "DownloadsAutoResumptionNative": [
+        {
+            "platforms": [
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "DownloadsAutoResumptionNative"
+                    ]
+                }
+            ]
+        }
+    ],
     "DownloadsLocationChange": [
         {
             "platforms": [