Merge "Can switch to legacy GLES driver when ANGLE is system driver" am: 0a9ada5ce6

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2270106

Change-Id: I1350f2f91cf6e09dc1ce40e2d957414e89da47b8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>