Update OWNERS and Histogram entries for Budget and BG Fetch

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 e5c72425ad706bb8d5faecba370a69e02028446b..d730e810472365f063f58ff84493bd3fe87ae000 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -4790,7 +4790,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="Blink.BudgetAPI.QueryBudget" units="budget">
-  <owner>harkness@chromium.org</owner>
+  <owner>peter@chromium.org</owner>
   <summary>
     Whenever the Budget API framework receives a query for the current budget,
     this records the total budget available to the origin, which is an internal
@@ -4803,7 +4803,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="Blink.BudgetAPI.Reserve" enum="BooleanSuccess">
-  <owner>harkness@chromium.org</owner>
+  <owner>peter@chromium.org</owner>
   <summary>
     Whenever the Budget API framework receives a request to reserve budget for a
     future background operation, this records whether the reserve request
@@ -21765,7 +21765,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="GCM.PendingConnectionEventsAtShutdown" units="events">
-  <owner>harkness@chromium.org</owner>
+  <owner>peter@chromium.org</owner>
   <summary>
     Number of connection events which have not been sent to GCM. This is
     recorded only at the time of shutdown to capture the events which are being
@@ -57282,7 +57282,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="PushMessaging.BackgroundBudget">
-  <owner>harkness@chromium.org</owner>
+  <owner>peter@chromium.org</owner>
   <summary>
     Whenever a Service Worker receives a push message, this records the budget
     available to the service worker, which is an internal Chrome value for the
@@ -57350,7 +57350,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="PushMessaging.SESForLowBudgetOrigin">
-  <owner>harkness@chromium.org</owner>
+  <owner>peter@chromium.org</owner>
   <summary>
     When a Service Worker hits low budget when servicing a push message, this
     records what the Site Engagement Service score is at that time.
@@ -57358,7 +57358,7 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="PushMessaging.SESForNoBudgetOrigin">
-  <owner>harkness@chromium.org</owner>
+  <owner>peter@chromium.org</owner>
   <summary>
     When a Service Worker hits zero budget when servicing a push message, this
     records what the Site Engagement Service score is at that time.