Merge "Call a search activity when using KEYCODE_SEARCH" am: 37d4e041bc am: 01a15fe2a8 am: 90bf18e2a7

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2455076

Change-Id: Id079a07e1bef44fdf5641792c716ae5cd972dd76
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>