Wiping the PDB effectively starves all other threads from
accessing flash, and freezes the UI. We throw up a dialog
but there's a race between drawing the dialog and starting the
wipe.
Show the dialog in onPreExecute to fix this.
Bug: 20854355
Change-Id: I8462f5ed3ff53ed574ebc1be416a821c2086b4f5
Each time a user adds an account, a challenge gets
stored to the persistent data block service.
If a user factory resets *from Settings*, this is
considered a "secure wipe" and thus we must wipe
the account challenges as well.
No other factory reset mechanism must be permitted
to wipe this data.
Bug: 14288780
Change-Id: Ibe48ccae2d7b5f8d736717a27b7c4f44bed0fba7
