This is a copy of https://widevine-internal-review.googlesource.com/#/c/11110/ The level 3 oemcrypto library version of DeactivateUsageEntry now returns OEMCrypto_ERROR_INVALID_CONTEXT if there is no entry in the usage table. Current Library Version: arm: Level3 Library Sep 3 2014 18:13:47 b/17373630 Change-Id: Iaeb65b4ad4b2b9f3c6733a2c9c8d96e2be263d09