Merge "[Media TTT] Add more information about code architecture to the...

Merge "[Media TTT] Add more information about code architecture to the tap-to-transfer README." into tm-dev am: f7430fce am: 58473b21 am: dc1f3821 am: 1b05b58d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18231441



Change-Id: I0927fe03c6e8eeecd1c109b37b19fa1cb73d77ec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>