Fix error with getting optional component from ComponentContainer

Author: emilypgoogle

firebase-perf/src/main/java/com/google/firebase/perf/FirebasePerfRegistrar.java

@@ -90,9 +90,8 @@ private static FirebasePerformance providesFirebasePerformance(ComponentContaine
     return component.getFirebasePerformance();
   }
 
-  @SuppressWarnings("FirebaseUseExplicitDependencies")
   private static FirebasePerfEarly providesFirebasePerformanceEarly(ComponentContainer container) {
     return new FirebasePerfEarly(
-        container.get(FirebaseApp.class), container.get(FirebaseApp.class).get(StartupTime.class));
+        container.get(FirebaseApp.class), container.getProvider(StartupTime.class).get());
   }
 }