Store MEDIA_CONTENT_CONTROL permission access in RouterRecord

This is a non-functional refactor in preparation for enabling screen off
scanning to routers (proxy or local) holding MEDIA_CONTENT_CONTROL
permission.

This is a cherrypick of f7e317a6

Bug: 352401364
Flag: EXEMPT no meaningful functional changes
Test: atest CtsMediaBetterTogetherTestCases CtsMediaHostTestCases
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:dfbe92d58e3865a40d02a0c34eadc8ed74ba2f80)
Merged-In: I68d5c3b7e518388e6d8eef1f96fa3f2a3c9b7784
Change-Id: I68d5c3b7e518388e6d8eef1f96fa3f2a3c9b7784