`Activate` activates non-public Controller properties, but [From*] do not

[pranavkm]

We have a mismatch between what we'd be willing to activate using [ActivateAttribute] as opposed to [From*] attributes. Consider

public class TestController
{
    [Activate]
    protected HttpContext HttpContext2 { get; set; }

    [FromServices]
    protected IMyService SomeService { get; set; }
}

We'll activate the HttpContext2 property, but not model bind the SomeService property. We should consider changing activation to only look at public properties although this might have impact on other things that also get activated.

[danroth27]

@rynowak Reconcile as part of #2151.

[danroth27]

@rynowak Can this issue be closed now that #2151 is done?

[rynowak]

No, we didn't change this behavior as part of #2151. It does exactly what it did before with the new attributes like [ActionContext]

[rynowak]

a452b10