Cannot play mp4 file whose sawb box has sub box stts

Problem: Android cannot play some special mp4 files which
have sawb box and sawb box has stts subbox.

Solution: Bypass the sub stts box to make file play

Bug: 123057213
Test: test with the file whose sawb box has subbox stts and
check if it can be played normally

Change-Id: I7d27c7377914ac659e086bd3ad6286e3146aa6e9