DO NOT MERGE Don't leak `this` out of GraphicBufferSource ctor

Bug: 37622974
Bug: 37622987
Bug: 37623757
Test: run poc and observe no crash
Change-Id: I1e25c011f02bec26a1480ec9a217a52f15d43cf2
(cherry picked from commit ebeb47000de33edd551d1d46fa0abe7100dbb30a)
3 files changed