Tests that execution contexts are reported for frames that were blocked due to mixed content when runtime is enabled *before* navigation.
{
    method : Runtime.executionContextCreated
    params : {
        context : {
            auxData : {
                frameId : <string>
                isDefault : true
                type : default
            }
            id : <number>
            name : 
            origin : https://devtools.test:8443
        }
    }
    sessionId : <string>
}
{
    method : Runtime.executionContextCreated
    params : {
        context : {
            auxData : {
                frameId : <string>
                isDefault : true
                type : default
            }
            id : <number>
            name : 
            origin : https://devtools.test:8443
        }
    }
    sessionId : <string>
}