Take ownership of NTP Doodle metrics

Bug: None
Change-Id: Ie03079ca73e9e2593b73ff0e17e13c47bc077d3e
Reviewed-on: https://chromium-review.googlesource.com/1231987Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Kyle Milka <kmilka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#592851}

tools/metrics/histograms/histograms.xml

@@ -62896,7 +62896,8 @@ uploading your change for review.
 </histogram>
 
 <histogram name="NewTabPage.LogoClick" enum="NewTabPageLogoClick">
-  <owner>treib@chromium.org</owner>
+  <owner>kmilka@chromium.org</owner>
+  <owner>ramyan@chromium.org</owner>
   <summary>
     The number of clicks on the static/call-to-action/animated logo on the NTP.
   </summary>
@@ -62904,7 +62905,8 @@ uploading your change for review.
 
 <histogram name="NewTabPage.LogoDownloadOutcome"
     enum="NewTabPageLogoDownloadOutcome">
-  <owner>treib@chromium.org</owner>
+  <owner>kmilka@chromium.org</owner>
+  <owner>ramyan@chromium.org</owner>
   <summary>
     Outcome of downloading search provider's logos. It measures whether
     download/parsing is successful, revalidation and parsing work properly, etc.
@@ -62912,7 +62914,8 @@ uploading your change for review.
 </histogram>
 
 <histogram name="NewTabPage.LogoDownloadTime" units="ms">
-  <owner>treib@chromium.org</owner>
+  <owner>kmilka@chromium.org</owner>
+  <owner>ramyan@chromium.org</owner>
   <summary>
     The amount of time it took to download the static logo. This includes
     requests where there was no logo, or where an existing logo was revalidated
@@ -62922,7 +62925,8 @@ uploading your change for review.
 </histogram>
 
 <histogram name="NewTabPage.LogoImageDownloaded" enum="BooleanFromHTTPCache">
-  <owner>treib@chromium.org</owner>
+  <owner>kmilka@chromium.org</owner>
+  <owner>ramyan@chromium.org</owner>
   <summary>
     A logo image (static or CTA) was downloaded. Recorded only when the image
     was downloaded and decoded without errors.
@@ -62930,7 +62934,8 @@ uploading your change for review.
 </histogram>
 
 <histogram name="NewTabPage.LogoShown" enum="NewTabPageLogoShown">
-  <owner>treib@chromium.org</owner>
+  <owner>kmilka@chromium.org</owner>
+  <owner>ramyan@chromium.org</owner>
   <summary>
     The number of static logos and animated logos shown to users. Note that the
     base version of this histogram is recorded both for logos from the cache and
@@ -62951,7 +62956,8 @@ uploading your change for review.
 </histogram>
 
 <histogram name="NewTabPage.LogoShownTime2" units="ms">
-  <owner>treib@chromium.org</owner>
+  <owner>kmilka@chromium.org</owner>
+  <owner>ramyan@chromium.org</owner>
   <summary>
     The amount of time between opening an NTP and the logo appearing. Only
     recorded when there is a logo, and only recorded once per NTP.