Remove gayane from owners and cleanup test histograms

Change-Id: I7d58e0a1e4045c0a4c7bef4441710da4dd4faf42
Reviewed-on: https://chromium-review.googlesource.com/c/1300077
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603212}

base/metrics/OWNERS

 asvitkine@chromium.org
 bcwhite@chromium.org
-gayane@chromium.org
 holte@chromium.org
 isherman@chromium.org
 jwd@chromium.org

tools/metrics/histograms/histograms.xml

@@ -112598,29 +112598,6 @@ uploading your change for review.
   </summary>
 </histogram>
 
-<histogram name="UMA.ExpiredHistogram.BugReportTest" expires_after="2018-07-20">
-  <owner>gayane@chromium.org</owner>
-  <summary>Not logged. Used for testing histogram expiry checker.</summary>
-</histogram>
-
-<histogram name="UMA.ExpiredHistogram.Milestone.BugReportTest"
-    expires_after="M68">
-  <owner>gayane@chromium.org</owner>
-  <summary>Not logged. Used for testing histogram expiry checker.</summary>
-</histogram>
-
-<histogram name="UMA.ExpiredHistogram.Milestone.Soon.BugReportTest"
-    expires_after="M69">
-  <owner>gayane@chromium.org</owner>
-  <summary>Not logged. Used for testing histogram expiry checker.</summary>
-</histogram>
-
-<histogram name="UMA.ExpiredHistogram.Soon.BugReportTest"
-    expires_after="2018-08-01">
-  <owner>gayane@chromium.org</owner>
-  <summary>Not logged. Used for testing histogram expiry checker.</summary>
-</histogram>
-
 <histogram name="UMA.ExternalExperiment.GroupCount" units="groups"
     expires_after="2018-08-30">
   <owner>asvitkine@chromium.org</owner>
@@ -112927,9 +112904,9 @@ uploading your change for review.
 </histogram>
 
 <histogram name="UMA.LogUpload.Canceled.CellularConstraint"
-    enum="BooleanCanceled">
+    enum="BooleanCanceled" expires_after="2019-04-30">
+  <owner>holte@chromium.org</owner>
   <owner>asvitkine@chromium.org</owner>
-  <owner>gayane@chromium.org</owner>
   <summary>
     Logs whether a log was not uploaded due to cellular log throttling logic.
     Android only.
@@ -113254,9 +113231,9 @@ uploading your change for review.
   </details>
 </histogram>
 
-<histogram name="UMA.UnsentLogs.Dropped">
+<histogram name="UMA.UnsentLogs.Dropped" expires_after="2019-04-30">
+  <owner>holte@chromium.org</owner>
   <owner>asvitkine@chromium.org</owner>
-  <owner>gayane@chromium.org</owner>
   <summary>
     Counter for number of UMA unsent logs removed from persistent storage.
   </summary>
@@ -116072,8 +116049,10 @@ uploading your change for review.
   </summary>
 </histogram>
 
-<histogram name="Variations.SeedProcessingTime" units="ms">
-  <owner>gayane@chromium.org</owner>
+<histogram name="Variations.SeedProcessingTime" units="ms"
+    expires_after="2019-04-30">
+  <owner>isherman@chromium.org</owner>
+  <owner>asvitkine@chromium.org</owner>
   <summary>
     Records how long it takes to load and process variations seed. This metric
     is recorded only when loading and processing of the seed is successful.