Log as warning

Author: mrober

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

@@ -31,7 +31,7 @@ public void onAppColdStart() {
     try {
       FirebasePerformance.getInstance();
     } catch (IllegalStateException ex) {
-      logger.info(
+      logger.warn(
           "FirebaseApp is not initialized. Firebase Performance will not be collecting any "
               + "performance metrics until initialized. %s",
           ex);

firebase-sessions/src/main/kotlin/com/google/firebase/sessions/FirebaseSessions.kt

@@ -149,7 +149,7 @@ internal constructor(
       sessionCoordinator.attemptLoggingSessionEvent(sessionEvent)
     } catch (ex: IllegalStateException) {
       // This can happen if the app suddenly deletes the instance of FirebaseApp.
-      Log.i(
+      Log.w(
         TAG,
         "FirebaseApp is not initialized. Sessions library will not collect session data.",
         ex