tree ac856b58f4862a49b53ca2083bc031d534e9cf32
parent 12017783dfd23a53c3e8dc69c98df48bb285ab23
author Urvang Joshi <urvang@google.com> 1541465006 -0800
committer Urvang Joshi <urvang@google.com> 1541625941 +0000

Cleanup regarding buffer pool ref counts.

Change mysterious function name 'ref_cnt_fb' to 'assign_frame_buffer'.

Also, add comments for:
- ref_count variable, including which variables it depends on
- assign_frame_buffer() function

Finally, remove unused function: uref_cnt_fb().

BUG=aomedia:2230

Change-Id: I7a086c906c2499c4876d5a7126e225d13aae187b