Report more advertising metrics data

Report more advertising metrics data below when the service is
unregistered.
- Replied request count (sum across interfaces)
- Sent packet count (including announcements and probes)
- Number of conflicts during probing
- Nubmer of conflicts after probing

Bug: 287546772
Test: atest FrameworksNetTestCases NsdManagerTest
Merged-In: I50c54a35dc523422e3a7302c059bbbc38eac5631
Change-Id: I50c54a35dc523422e3a7302c059bbbc38eac5631
diff --git a/service/src/com/android/metrics/stats.proto b/service/src/com/android/metrics/stats.proto
index 99afb90..ecc0377 100644
--- a/service/src/com/android/metrics/stats.proto
+++ b/service/src/com/android/metrics/stats.proto
@@ -64,6 +64,18 @@
 
   // Record sent query count before stopped discovery
   optional int32 sent_query_count = 12;
+
+  // Record sent packet count before unregistered service
+  optional int32 sent_packet_count = 13;
+
+  // Record number of conflict during probing
+  optional int32 conflict_during_probing_count = 14;
+
+  // Record number of conflict after probing
+  optional int32 conflict_after_probing_count = 15;
+
+  // The random number between 0 ~ 999 for sampling
+  optional int32 random_number = 16;
 }
 
 /**