The new APIs are:
void addRestrictBackgroundWhitelistedUid(int uid);
void removeRestrictBackgroundWhitelistedUid(int uid);
int[] getRestrictBackgroundWhitelistedUids();
The whitelist is persisted in the same XML used for the other policies,
using the new 'whitelist and 'restrict-background' tags. Examples:
3 whitelisted apps:
<whitelist>
<restrict-background uid="10001" />
<restrict-background uid="10009" />
<restrict-background uid="10086" />
</whitelist>
No whitelisted app:
<whitelist />
BUG: 26451391
Change-Id: I01b114c346fd8abc05433ad43d010379384f8c2b
b85a637eac