Merge changes from topics "presubmit-am-3fca48eecdb74a8e96804b9a78256e56", "presubmit-am-563ae16077714dd0a7da266e4a698052", "presubmit-am-9cc0354ba3f24063b26fb042cc9dbf89" into tm-dev

* changes:
  [Media TTT] Fix the generic icon on the receiver chip by making it smaller so it fits in the circle.
  [Media TTT] Add a ripple to the undo button.
  [Media TTT] Update the error message string.