Merge "Have GrContext hold a strong ref to VulkanManager" into udc-dev am:...

Merge "Have GrContext hold a strong ref to VulkanManager" into udc-dev am: 2a3fda26 am: 08be5f74

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22958359



Change-Id: Ieb430f1d5eefd59a7c411132f376720f0b4bab5a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>