Change raw pointer mNamedReaders to reference

Using a reference for mNamedReaders ensures it is never updated.

Also:
 - add FIXME related to lack of lock protection for mNamedReaders.
 - add a few other FIXME
 - add section breaks

Bug: 37153050
Test: builds OK
Change-Id: I8b80acb5cc943795becdc2d24debc11b09620753
3 files changed