[VizHitTesting] Update metrics owner

This patch changes the owner of some viz hit tesing related metrics
because yigu@ is no longer working on this project.

Bug: 1160809
Change-Id: Ic5ea3c2905adb3219e668eab327b66c687d8929c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2597653Reviewed-by: Mark Pearson <mpearson@chromium.org>
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Commit-Queue: Yi Gu <yigu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#840354}

tools/metrics/histograms/histograms_xml/event/histograms.xml

@@ -55,8 +55,8 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Event.AsyncTargeting.AsyncClientDepth" units="clients"
-    expires_after="2021-01-31">
-  <owner>yigu@chromium.org</owner>
+    expires_after="2021-06-06">
+  <owner>sadrul@chromium.org</owner>
   <owner>event-targeting@chromium.org</owner>
   <summary>
     Tracks how many clients were queried (asynchronously) to determine the
@@ -66,12 +66,11 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 
 <histogram name="Event.AsyncTargeting.ResponseTime" units="ms"
     expires_after="2021-06-06">
-  <owner>yigu@chromium.org</owner>
+  <owner>sadrul@chromium.org</owner>
+  <owner>event-targeting@chromium.org</owner>
   <summary>
     Tracks how long it takes for a client to respond to an asynchronous request
     to find a target for an input event.
-
-    Team: event-targeting@chromium.org.
   </summary>
 </histogram>
 
@@ -1621,13 +1620,12 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Event.VizHitTest.AsyncHitTestReasons"
-    enum="AsyncHitTestReasons" expires_after="2021-06-27">
-  <owner>yigu@chromium.org</owner>
+    enum="AsyncHitTestReasons" expires_after="2021-06-06">
+  <owner>sadrul@chromium.org</owner>
+  <owner>event-targeting@chromium.org</owner>
   <summary>
     Tracks the reasons why sychronous hit testing could not be done for each hit
     test requests processd by HitTestQuery.
-
-    Team: event-targeting@chromium.org.
   </summary>
 </histogram>