Merge "Cache earliest event results." into tm-dev am: 173bdbd3 am: 40aa2376

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17546229



Change-Id: Icd08c06b241e69d64a2c3544dfe9678f46d6b89e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>