[Custom Tabs] Navigate to other apps if the first url is a redirect

testing/variations/fieldtrial_testing_config_android.json

 {
     "AndroidSessionNotifications": [
         {
             "group_name": "Disabled"
         }
     ],
     "AsyncDns": [
         {
             "group_name": "AsyncDnsA"
         },
@@ skipping 44 matching lines @@
             "params": {
                 "enabled": "true"
             }
         }
     ],
     "CreditCardScan": [
         {
             "group_name": "Enabled"
         }
     ],
-    "CustomTabs": [
-        {
-            "group_name": "Enabled"
-        },
-        {
-            "group_name": "DisablePrerender"
-        },
-        {
-            "group_name": "Disabled"
-        }
-    ],
     "DataCompressionProxyDevRollout": [
         {
             "group_name": "Control"
         },
         {
             "group_name": "Enabled"
         }
     ],
     "DataCompressionProxyLoFi": [
         {
@@ skipping 451 matching lines @@
     ],
     "use-new-media-cache": [
         {
             "enable_features": [
                 "use-new-media-cache"
             ],
             "group_name": "Enabled"
         }
     ]
 }