Fix tests

browser/brave_vpn/brave_vpn_service_factory.cc

@@ -68,7 +68,8 @@ BraveVpnServiceFactory::~BraveVpnServiceFactory() = default;
 
 KeyedService* BraveVpnServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
-  if (!brave_vpn::IsAllowedForContext(context)) {
+  if (!brave_vpn::IsAllowedForContext(context) ||
+      !g_brave_browser_process->brave_vpn_os_connection_api()) {
     return nullptr;
   }
 

test/base/testing_brave_browser_process.cc

@@ -155,7 +155,6 @@ TestingBraveBrowserProcess::brave_farbling_service() {
 #if BUILDFLAG(ENABLE_BRAVE_VPN)
 brave_vpn::BraveVPNOSConnectionAPI*
 TestingBraveBrowserProcess::brave_vpn_os_connection_api() {
-  NOTREACHED();
   return nullptr;
 }
 #endif