Merge "TestUrlRequestCallback: assert internal states using matchers" am: 02970ff18b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2455069

Change-Id: I331456e21a4a2d8a17ce69c9b9283dc6d4ab0d41
Signed-off-by: Automerger Merge Worker <[email protected]>