Index: tools/metrics/ukm/ukm.xml |
diff --git a/tools/metrics/ukm/ukm.xml b/tools/metrics/ukm/ukm.xml |
index 85d388261cf69fa3adc05580566a3d8d0eb5299e..2b809c898069ade428155aac7576100573b037cb 100644 |
--- a/tools/metrics/ukm/ukm.xml |
+++ b/tools/metrics/ukm/ukm.xml |
@@ -7,6 +7,10 @@ found in the LICENSE file. |
<!-- |
This file is used to generate a comprehensive list of Chrome UKM metrics |
along with a detailed description for each metric. |
+ |
+Events may be marked with the attribute singular="True" to indicate that |
+the event will only occur once per source, and multiple entries will just |
+be describing additional metrics about the same event. |
--> |
<ukm-configuration> |
@@ -155,7 +159,7 @@ along with a detailed description for each metric. |
</metric> |
</event> |
-<event name="PageLoad"> |
+<event name="PageLoad" singular="True"> |
<owner>bmcquade@chromium.org</owner> |
<summary> |
Recorded when Pageload observer events fire. |