The stop string is media_output_dialog_button_stop_casting

Bug: 235622493
Test: build pass.
Change-Id: I5b74b52f0a8469ae00df7617f40c3993b56503e9
Merged-In: Idd26d2b4e10dfcd00045184ddd2f9815a02ec7ce
(cherry picked from commit 04266254083d9117d29173d7e7065273bf5e4507)
2 files changed