Fixes bug #2507582 by doing the following:
- Un-@hide the FLAG_ALLOW_BACKUP, FLAG_KILL_AFTER_RESTORE, and
FLAG_RESTORE_ANY_VERSION mask constants in ApplicationInfo. These
correspond, respectively, to the <application> manifest tag's
android:allowBackup, android:killAfterRestore, and
android:restoreAnyVersion attributes.
- Remove the android:restoreNeedsApplication attribute and the
corresponding FLAG_RESTORE_NEEDS_APPLICATION constant [which was still
marked @hide]. We now always use the application's own Application
class when performing a normal restore. In the future when we support
an externalized full-filesystem backup/restore operation, we will use
an OS-defined agent class with a base-class Application instance, but
this will not happen until a future release.
Also expands real documentation on the above ApplicationInfo constants;
that work is part of bug #2465360
Change-Id: I735d07a963ae80a01343637d83bef84e4c23fdcc
3de55bcd34