private void set(boolean enabled) {
        Context context = InstrumentationRegistry.getContext();
        TrustedWebActivityService.setVerifiedProviderSynchronouslyForTesting(
                context, enabled ? context.getPackageName() : null);
    }
Manually disables verification, causing TrustedWebActivityService calls to throw an
exception.
customtabs/tests/src/android/support/customtabs/trusted/VerifiedProviderTestRule.java