[automerger skipped] Fix performance of multiple same size allocations.
am: 25b667ba39 -s ours
am skip reason: change_id Iff41d5b5002919c4df03fcb7d742e501f9e38b8e with SHA1 0af4ee86df is in history

Change-Id: I954cf82ceb60ec1da2aab050f9fc9a58c0e74d01