[automerger skipped] Add placeholder when media control title is blank am: df4686dc0a -s ours am: 43a6d0e2c1 -s ours am: 9c47a9ad77 -s ours am: abd594af2d -s ours am: 54e3d50f9c -s ours

am skip reason: Merged-In Ie406c180af48653595e8e222a15b4dda27de2e0e with SHA-1 a0fda1f36d is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23497629

Change-Id: I4b6f5b8b76ef6d11ab493d001c1f5a51d625396b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>