Add MediaExtractor hanging tests

This verifies 6 related bugs having to do with the media extractor
service being vulnerable to files that take a very long (or infinite)
time to process.

Bug: 123700383
Bug: 127310810
Bug: 127312550
Bug: 127313223
Bug: 127313537
Bug: 127313764
Bug: 126380818
Change-Id: I909549a738471a2e170a5257ef1cbe2f91a60c83
(cherry picked from commit 4379f03c75e670ae7accdb3d0d2a879adcfbeb33)
Merged-In: I909549a738471a2e170a5257ef1cbe2f91a60c83
7 files changed