Merge "MediaCodec: don't cache buffers until requested" into tm-dev am: d7d0d4b1

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



Change-Id: Icb93d5a43e41482f4ad48e927941c848b0b174e4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>