hwui: Allow to blacklist android applications [1/2]

PS2: Drop the stupid files switch to a proper Setting
PS3: WHAT THE HELL!?
PS4: Remove debugging
PS5: Also add overrides to layoutlib and mock parts
PS6" Probably good idea to override the correct classes

Change-Id: I436b5dd7d6bf9fd36be7e86fc9d2a174a66701ff