Update EME metrics expiration.

Bug: 1165081, 1165082
Change-Id: Iaa9ea45ecced614b13e3c266b6302a8c2891d5e9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2626170Reviewed-by: Xiaohan Wang <xhwang@chromium.org>
Reviewed-by: Jesse Doherty <jwd@chromium.org>
Commit-Queue: John Rummell <jrummell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843787}

tools/metrics/histograms/histograms_xml/media/histograms.xml

@@ -1636,7 +1636,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Media.EME.MediaDrm.GetOriginIdResult" enum="GetOriginIdResult"
-    expires_after="M90">
+    expires_after="2022-02-01">
   <owner>jrummell@chromium.org</owner>
   <owner>media-dev@chromium.org</owner>
   <summary>
@@ -1648,7 +1648,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 
 <histogram
     name="Media.EME.MediaDrm.PreprovisionedOriginId.NonPerAppProvisioningDevice"
-    units="units" expires_after="M90">
+    units="units" expires_after="2022-02-01">
   <owner>jrummell@chromium.org</owner>
   <owner>media-dev@chromium.org</owner>
   <summary>
@@ -1659,7 +1659,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 
 <histogram
     name="Media.EME.MediaDrm.PreprovisionedOriginId.PerAppProvisioningDevice"
-    units="units" expires_after="M90">
+    units="units" expires_after="2022-02-01">
   <owner>jrummell@chromium.org</owner>
   <owner>media-dev@chromium.org</owner>
   <summary>
@@ -1736,7 +1736,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Media.EME.UrlProvisionFetcher.ResponseCode"
-    enum="CombinedHttpResponseAndNetErrorCode" expires_after="M90">
+    enum="CombinedHttpResponseAndNetErrorCode" expires_after="2022-02-01">
   <owner>jrummell@chromium.org</owner>
   <owner>media-dev@chromium.org</owner>
   <summary>