Merge "cronet: add CTS test for net.http.UrlRequest.cancel()" am: 6ee737dd15

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2412101

Change-Id: If34fa36c66d6c0d3f03b9b4b42784e0417f73b5b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>