Add missing method to TestWebSettings

closes #1307
Fixes #1357 ActivityThread.getPackageManager().getPackageInfo() should return null if the package is not found in the system
and not forward the NameNotFoundException which will get Wrapped Around UndeclaredThrowableException since# Please enter the commit message for your changes. Lines starting
IPackageManager.getPackageInfo() has RemoteException as declared checked exception.# with '#' will be ignored, and an empty message aborts the commit.
See http://docs.oracle.com/javase/8/docs/technotes/guides/reflection/proxy.html