Merge "Revert "MediaCodec: don't cache buffers until requested"" into tm-dev am: 84959301

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18894226



Change-Id: I61b1e17bb4d897ed09dbf26398a7ad8dc91766f5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>