Location permission info is 1) location specific and 2) may change over time, and thus shouldn't be in CallerIdentity. This CL moves the information (temporarily) into LocationRequest. Follow up CLs will include deeper refactors that eliminate the need for this information to be in LocationRequest as well. Test: manual + presubmits Change-Id: I3b4b41941e386f644efce2effe6985b9c865586c