Update usage comment for IntelligenceEventReported
Sum is a better way to use this atom as it's less error prone and has
less rounding error with computing average based on sum.
Test: build
diff --git a/cmds/statsd/src/atoms.proto b/cmds/statsd/src/atoms.proto
index 004eef7..2bc73ab 100644
--- a/cmds/statsd/src/atoms.proto
+++ b/cmds/statsd/src/atoms.proto
@@ -6250,6 +6250,6 @@
optional android.stats.intelligence.Status status = 2;
// How many times the event occured (to report a batch of high frequency events).
optional int32 count = 3;
- // How long the event took (averaged for batches).
+ // How long the event took (sum of durations if count > 1)
optional int64 duration_millis = 4;
}