Merge "Update docs to reflect that toast should take activity context, not...

Merge "Update docs to reflect that toast should take activity context, not application context." am: 9ed3c880 am: 0da89ddc am: 66710c79

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2597393



Change-Id: I63f1d98e642fca723702951098bfc306069e092b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>