Merge "Merge "Merge "media: clarify that flush() is not supported for...

Merge "Merge "Merge "media: clarify that flush() is not supported for encoders." into tm-dev am: 381a3b66 am: 946aeccb" into tm-d1-dev-plus-aosp am: df1e71f4" into tm-qpr-dev-plus-aosp am: 097cca5d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18590094



Change-Id: I5e6713c03ff81201a7a4b7ce79a0a895cd882bbe
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>