Improve logging

Author: tejasd

firebase-perf/src/main/java/com/google/firebase/perf/session/SessionManager.java

@@ -20,6 +20,7 @@
 import androidx.annotation.VisibleForTesting;
 import com.google.firebase.perf.application.AppStateMonitor;
 import com.google.firebase.perf.application.AppStateUpdateHandler;
+import com.google.firebase.perf.logging.AndroidLogger;
 import com.google.firebase.perf.session.gauges.GaugeManager;
 import com.google.firebase.perf.v1.ApplicationProcessState;
 import com.google.firebase.perf.v1.GaugeMetadata;
@@ -151,6 +152,8 @@ public void updatePerfSession(PerfSession perfSession) {
       return;
     }
 
+    AndroidLogger.getInstance().debug("Perf Session Changed: " + perfSession);
+
     this.perfSession = perfSession;
 
     synchronized (clients) {

firebase-perf/src/main/java/com/google/firebase/perf/session/SessionManagerKt.kt

@@ -12,7 +12,7 @@ class SessionManagerKt(val dataCollectionEnabled: Boolean): SessionSubscriber {
         get() = SessionSubscriber.Name.PERFORMANCE
 
     override fun onSessionChanged(sessionDetails: SessionSubscriber.SessionDetails) {
-        AndroidLogger.getInstance().debug("Session Changed: $sessionDetails")
+        AndroidLogger.getInstance().debug("AQS Session Changed: $sessionDetails")
         val currentInternalSessionId = SessionManager.getInstance().perfSession().internalSessionId
 
         // There can be situations where a new [PerfSession] was created, but an AQS wasn't