Add a mutability flag to the PendingIntent

It's required for apps targeting S+ to specify explicitly
either FLAG_MUTABLE or FLAG_IMMUTABLE when creating a
PendingIntent. Thus, add a mutability flag to the
PendingIntent that doesn't specify it before.

Bug: 186090864
Test: make CaptivePortalLogin
Test: verified with test steps without exception
Change-Id: I2d9d69b338d3004a6cd88e2379d7fb142e9171d1
1 file changed