Revert "Revert "Convert Keyguard tests to Robolectric tests""

This reverts commit 122768bf801ceceae0e8f32d39ba9f461f8a471e.

Reason for revert: reverting the revert with fix of RequiresPermissionChecker

Change-Id: I1f30e170aeef27b93a7229ec9fd2a3d09bc659c5
32 files changed