Lockscreen Wallpaper

Custom lockscreen

Accessible via launcher wallpaper selector and
Settings - Display - Wallpaper - Lock screen

Change-Id: I2e4722d1a6d4ba80a3c656306ceb251d630a8e21

Conflicts:
	packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java

Themes: Keyguard: Fix NPE setting lockscreen wallpaper

After boot the view might not be laid out and so getWidth() and
getHeight() return 0 and will cause a NullPointerException in
createBitmap().

Bug AOSPA-448

Change-Id: Ibacf4199a69709dc34d21695732c2a5360533a23
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>

Keyguard: fix NPE setting lockscreen wallpaper

Continue previous patchset (check history)

------- Cherry-picked commit -------

After boot the view might not be laid out and so getWidth() and
getHeight() return 0 and will cause a NullPointerException in
createBitmap().

Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>