Make "Ask every time" actually work that way

..in link-opening behavior.  If a candidate is marked as "ask
every time," then the user is guaranteed to get a disambiguation
prompt including that candidate even when some other candidate
app is in the "always prefer this over a browser" state.

Bug 23147746

Change-Id: I73d8893ab74ea0356b757ab836349243cda2e307
1 file changed