Merge "Rename android.media.MediaTranscodeManager -> MediaTranscodingManager" into sc-dev am: 9d0e91c7b6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15521772

Change-Id: I02cccd46608894c908ccbcf8e1d0fe3bf4a5af6a