29231877e6
This change reverts the removal of setBaseTestProviders that was introduced in 8d746e3f6795c8840116f4649a37a1efb4243eb9. Instead, setBaseTestProviders and the providers provided from `@angular/platform-browser-dynamic/testing` and `@angular/server/testing` will still work for the next release, but are deprecated. See 8d746e3f6795c8840116f4649a37a1efb4243eb9 for how to upgrade.