DO NOT MERGE. ActivityPicker shouldn't grant permissions.

This picker has no business granting any Uri permissions, so remove
any grant flags that malicious apps may have tried sneaking in.

Test: builds, boots
Bug: 32879772
Change-Id: I91c48c73287a271bd6c99e60e216dead22e68764
(cherry picked from commit 3f218e8431cb5648bcb46131551c133ba53ef870)
1 file changed