DO NOT MERGE Check caller for sending media key to global priority session am: 4e9af38ec4  -s ours am: 031fb04776 am: 2d88f87a82 am: 64110c6bf1  -s ours am: 8d14f464b5 am: f595add2ff am: e1e6f0a7f5 am: 9632afe809  -s ours am: b96d410537 am: 9b790e27b7
am: 8d45b4522d

Change-Id: I8614621c0e2800749d0186c4b2170c7310eff5a6