Lockscreen blur and blur radius (1/2)

Change-Id: I37e8adf8a4e5d6ef1943d2e0ad3cc2a59ba0f9da
Lockscreen blur and blur radius and Wallpaper (1/2)

Change-Id: I37e8adf8a4e5d6ef1943d2e0ad3cc2a59ba0f9da