[automerger skipped] MediaCodec: don't cache buffers until requested am: d59a075f -s ours

am skip reason: Merged-In I4caca59d6854416cedb6758fe66aefaacb69beb7 with SHA-1 07358dfe is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18501488



Change-Id: I08aff0e101afe6c4103212fd5cfc5c3afc24928e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>