Remove AOSP reference to utils.mk

Remove function calls from AOSP code to utils.mk
& replace them with actual definition.

Change-Id: I5f9bee27521c39caab17b473059729800e55314e
CRs-fixed: 566287
dashplayer: Handle error for text track

Handle UNKNOWN_ERROR for text track

Change-Id: Ifeb827b4b7f0fb796593789b0b51be333292c66f
dashplayer: Add support for invoke

Add support for  invoke() in dashplayer and QCMediaPlayer

Change-Id: I58ac0da2a9cd067d2ef92084b9c4c503786edb2c