FieldTrail - Added "delay_tcp_race": "true" as the default param when

testing/variations/fieldtrial_testing_config_android.json

 {
     "AndroidSessionNotifications": [
         {
             "group_name": "Disabled"
         }
     ],
     "AsyncDns": [
         {
             "group_name": "AsyncDnsA"
         },
@@ skipping 25 matching lines @@
             "params": {
                 "limit": "3"
             }
         },
         {
             "group_name": "Enabled"
         }
     ],
     "ChromotingQUIC": [
         {
-            "group_name": "Enabled"
+            "group_name": "Enabled",
+            "params": {
+                "delay_tcp_race": "true"
+            }
         }
     ],
     "ContextualSearch": [
         {
             "group_name": "OptOut",
             "params": {
                 "enabled": "true"
             }
         }
     ],
@@ skipping 413 matching lines @@
     ],
     "use-new-media-cache": [
         {
             "enable_features": [
                 "use-new-media-cache"
             ],
             "group_name": "Enabled"
         }
     ]
 }