tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 441ddd975759eec65eb5b4aac562b77333853c84..6acf7801dd7b1b8d990f42ea2f5f1e355eb1561c 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -423,6 +423,22 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="ActivityTracker.Collect.UncleanShutdownCount" units="count">
+  <owner>manzagop@chromium.org</owner>
+  <summary>
+    Number of unclean shutdowns, as derived from the stability instrumentation.
+    Logged each time stability file collection is performed.
+  </summary>
+</histogram>
+
+<histogram name="ActivityTracker.Collect.UncleanSystemCount" units="count">
+  <owner>manzagop@chromium.org</owner>
+  <summary>
+    Number of unclean shutdowns that can potentially be attributed to system

[Sigurður Ásgeirsson, 2017/05/15 20:18:04]

This should be less than or equal to UCS?

[manzagop (departed), 2017/05/17 22:31:56]

Yes. Modified comment. 

Also noticed an inconsistency: the counter for this was incremented on system
log analysis but the UCS counter was conditional on other things, such as
successful deletion of the stability file. Deferred the increment until after we
know collection is successful.

+    instability. Logged each time stability file collection is performed.
+  </summary>
+</histogram>
+
 <histogram name="ActivityTracker.Collect.WriteDumpStatus"
     enum="ActivityTrackerWriteDumpStatus">
   <owner>manzagop@chromium.org</owner>