Read rotation setting correctly from the wallpaper picker.

If reading the rotation setting without the multi-process flag, the
WallpaperPickerActivity usually picks up a cached value. Specifying the
multi-process flag during the read fixes this and the wallpaper picker
always has the correct rotation setting.

Change-Id: Ic3639f8cd694674e92c8940b753c6bc30486076d
3 files changed