Add tests to verify "DCIM/Camera" is always visible Added a test to verify that nomedia presence in DCIM/Camera will not make the directory hidden, and app can continue to use MediaStore APIs for files in this directory. Bug: 168830497 Test: atest ScopedStorageHostTest#testCanWriteToDCIMCameraWithNomedia Change-Id: I1c68729b40f9615bb2e6021daac100dac710ffe6