Merge from Widevine repo of http://go/wvgerrit/29861
This code adds a watchdog timer to the oemcrypto initialization. If
initialization does not finish within 5 seconds, the process will
abort.
Testing: see code in patch 1. Watch dog was forced while using Play
Movies. The busy spinner spun for at least 5 seconds, but Play Movies
was able to restart itself.
b/62106796
Change-Id: Ib59f5bc4a484eff1dc386e07a4b198ecb713c69b
e20e909cbd