int32* id) OVERRIDE;
virtual void DestroyGpuMemoryBuffer(int32 id) OVERRIDE;
virtual uint32 InsertSyncPoint() OVERRIDE;
+ virtual uint32 InsertFutureSyncPoint() OVERRIDE;
+ virtual void RetireSyncPoint(uint32 sync_point) OVERRIDE;
virtual void SignalSyncPoint(uint32 sync_point,
const base::Closure& callback) OVERRIDE;
virtual void SignalQuery(uint32 query,