Clean up IBGP usage in BufferQueue based BlockPool

Handle remote error of IGBP#cancel. Also do not use nullptr fence for
IGBP#cancel.

Bug:123259906
Change-Id: Id5a621165726e327db23be23234a23e8fed7c095
(cherry picked from commit e7306ad9eabe4699364cac94599dfde61617ab87)
1 file changed
tree: d582cad49abd02f298186a77cc556d7c74bb80f9
  1. codec2/
  2. hooks/
  3. media/
  4. Android.bp
  5. OWNERS