Make documentation for cross-profile intent filters clearer.

Explain why FLAG_MANAGED_CAN_ACCESS_PARENT and FLAG_PARENT_CAN_ACCESS_MANAGED
have these names.
Also do not mention the disambiguation list since there is not always a
disambiguation list shown when resolving cross-profile intent filters.

BUG:18962528

Change-Id: Ibbb9505dcab7cf17d87435eff2cef3e745e95209
1 file changed