Revert "Revert "Lockscreen blur: after the screenshot is taken, handle the rest of the bitmap preparation async with display state change""

Woops. Had the setting off... That would make it not work. Lol.

This reverts commit 319c2266d22155fd767fd0c4a563b9b5cfd83b60.

Change-Id: I39e05d940872dcd93f1171d926f9e81844a32191
Merge "Revert "Revert "Lockscreen blur: after the screenshot is taken, handle the rest of the bitmap preparation async with display state change""" into kk44