Quota: Extend expiry of Quota.EvictedBytesPerRound.

Bug: 1158461
Change-Id: Ifcf9beca09381e26f866f57c4be6a22225b2cccc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2590710Reviewed-by: Weilun Shi <sweilun@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Jarryd Goodman <jarrydg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#837133}

tools/metrics/histograms/histograms_xml/quota/histograms.xml

@@ -79,7 +79,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Quota.EvictedBytesPerRound" units="MB"
-    expires_after="2021-01-26">
+    expires_after="2021-12-14">
   <owner>jarrydg@chromium.org</owner>
   <owner>chrome-owp-storage@google.com</owner>
   <summary>