Update histogram expirations for DevTools.BackgroundService.*

Bug: 1125665
Change-Id: I0f3b9de05eb1b5f78912637d22836501a61d0057
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2624652
Auto-Submit: Rayan Kanso <rayankans@chromium.org>
Reviewed-by: Weilun Shi <sweilun@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842867}

tools/metrics/histograms/histograms_xml/dev/histograms.xml

@@ -30,7 +30,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="DevTools.BackgroundService.ClearEvents"
-    enum="ServiceWorkerStatusCode" expires_after="M87">
+    enum="ServiceWorkerStatusCode" expires_after="M92">
   <owner>yangguo@chromium.org</owner>
   <owner>rayankans@chromium.org</owner>
   <owner>bmeurer@chromium.org</owner>
@@ -42,7 +42,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="DevTools.BackgroundService.GetEvents"
-    enum="ServiceWorkerStatusCode" expires_after="M87">
+    enum="ServiceWorkerStatusCode" expires_after="M92">
   <owner>rayankans@chromium.org</owner>
   <owner>yangguo@chromium.org</owner>
   <owner>bmeurer@chromium.org</owner>
@@ -53,7 +53,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="DevTools.BackgroundService.LogEvent"
-    enum="ServiceWorkerStatusCode" expires_after="M87">
+    enum="ServiceWorkerStatusCode" expires_after="M92">
   <owner>rayankans@chromium.org</owner>
   <owner>yangguo@chromium.org</owner>
   <owner>bmeurer@chromium.org</owner>
@@ -65,7 +65,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="DevTools.BackgroundService.StartRecording"
-    enum="DevToolsBackgroundService" expires_after="M87">
+    enum="DevToolsBackgroundService" expires_after="M92">
   <owner>yangguo@chromium.org</owner>
   <owner>bmeurer@chromium.org</owner>
   <owner>rayankans@chromium.org</owner>