TIF: Allow undefined reasons to be passed by notifyVideoUnavailable
TIF: Allow undefined reasons to be passed by notifyVideoUnavailable

Bug: 26819129
Change-Id: Ia3cbc8183b08e7431276795f74fcc6701de0a238

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base