[UMA] Change histogram expiry milestone

Bug: 1138281
Change-Id: I3d9feb0156ead58ee3b2765522a888ab8e2a42ae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2490966Reviewed-by: Jesse Doherty <jwd@chromium.org>
Commit-Queue: Alex Danilo <adanilo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#820115}

tools/metrics/histograms/histograms_xml/file/histograms.xml

@@ -497,7 +497,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="FileBrowser.Recent.LoadArcMedia" units="ms"
-    expires_after="M88">
+    expires_after="M92">
   <owner>slangley@chromium.org</owner>
   <owner>weifangsun@chromium.org</owner>
   <summary>
@@ -507,7 +507,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="FileBrowser.Recent.LoadCrostini" units="ms"
-    expires_after="M88">
+    expires_after="M92">
   <owner>slangley@chromium.org</owner>
   <owner>weifangsun@chromium.org</owner>
   <summary>
@@ -517,7 +517,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="FileBrowser.Recent.LoadDownloads" units="ms"
-    expires_after="M88">
+    expires_after="M92">
   <owner>slangley@chromium.org</owner>
   <owner>weifangsun@chromium.org</owner>
   <summary>
@@ -526,7 +526,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
   </summary>
 </histogram>
 
-<histogram name="FileBrowser.Recent.LoadDrive" units="ms" expires_after="M88">
+<histogram name="FileBrowser.Recent.LoadDrive" units="ms" expires_after="M92">
   <owner>slangley@chromium.org</owner>
   <owner>weifangsun@chromium.org</owner>
   <summary>
@@ -535,7 +535,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
   </summary>
 </histogram>
 
-<histogram name="FileBrowser.Recent.LoadTotal" units="ms" expires_after="M88">
+<histogram name="FileBrowser.Recent.LoadTotal" units="ms" expires_after="M92">
   <owner>slangley@chromium.org</owner>
   <owner>weifangsun@chromium.org</owner>
   <summary>