Dilip Ojha

After [this effort](https://github.com/dotnet/wpf/issues/241) was completed, we now want to do the same for our internal test repo (test code, infrastructure, etc) in order to be completely rid of System.Security.Permissions.dll.

One of our tests has a class that should implement `WindowsFormsApplicationBase`. Currently this type is not ported to .NET Core, so we have temporarily removed its usage. Once this type...

**The following tests FAIL on .NET Core and .NET Framework** /Name="EventOrdering" /SubArea="ElementHost" /Name="MouseFocus" /SubArea="WindowsFormsHost" /Name="Dialogkeys" /SubArea="WindowsFormsHost" **The following tests FAIL on .NET Core but PASS on .NET Framework** /Name="Async" /SubArea="WindowsFormsHost"

There are a total of 35 test failures in Animation Feature tests. These tests have been disabled as part of the Animation Feature Test port. They need to be fixed...