Merge "Move Cronet's MTS/CTS to external/cronet" into main am: 143a6c7b2e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2910846

Change-Id: I800083767f7ed347921381bcca5c13e14bd6c25e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>