DO NOT MERGE Don't leak `this` out of GraphicBufferSource ctor am: ebeb47000d am: afa728e0b7 am: 63f4d38b3e am: 19b6a74a9d  -s ours am: 9b2197958f am: c50cf9d602 am: 1aa5d1c703 am: 1a8358e06a am: af8e0b2c1e  -s ours
am: 758e62457c

Change-Id: I41cb530a88d48cfd125017302a13f6ee608117fe