[automerger skipped] Rename android.media.MediaTranscodeManager -> MediaTranscodingManager am: 243e5ab2b2 -s ours am: ddaf6b4117 -s ours

am skip reason: Merged-In I40ab066cd61be8d278f21cc788016f2edd6bb86e with SHA-1 1168d9d014 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15544047

Change-Id: Id6f59abde3d02ddaa5b11bff07be7c36fbee0a7a