In AOSP master and downstream branches, this likely works via a transitive dependency. In mainline-prod, this doesn't work. Add the dependency explicitly, since it makes things build everywhere and in general it's also good practice to "include what you use". Bug: 167645754 Test: m CtsNetTestCasesLatestSdk in mainline-prod has fewer errors Change-Id: Ie575372415a806deee9996aab7f920d2c15bff80