If RenderScript HIDL server does not exist or cannot be opened,
currently it results in a nullptr dereference when the VTS test is
torn down. This CL adds a check before the cleanup.
Test: mm -j40
Bug: 63711002
Change-Id: I11a226a78b31444e7b198b2ff1dfa3794963caa0
Added missing synchronization before context destroy
Bug: 38385848
Test: make vts, does not fail with multiple tests
Change-Id: Ib0d038969e9a1d6f5ea555ccb60fed55b69e05dc
Contains the gtest for the vts-hidl-hal test. The goal is to have
1 test case for each HIDL HAL entry by 3/15/17. There are still a few
tests with bugs, so they have been commented out and will be fixed by
3/17/17.
Bug: 34396220
Bug: 35915961
Test: mm and run on angler
Change-Id: I20462432a42e3aa307b98e728f30f20f5aa1e921
