Revert "Revert "Bind to FBO when using GPU composition""

Hold for now while I propose a fix on top of this change.

This reverts commit 8d4f90aa.

Reason for revert: Forward fixing

Bug: 117680609
Change-Id: I68a26ced146fa057de3aeb144cbfe2fa3c9842fe
Test: See If639ce2c6cd600eabb957d278815f80b413d92b3