[Passwords] Extend PasswordManager.AccountStorageUserStateDuration M90

To be consistent with other password manager account storage metrics.

Bug: 1140079
Change-Id: I3eed095d8f92b237d2007feeb80860f0b9086ccc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2487285
Auto-Submit: Mohamed Amir Yosef <mamir@chromium.org>
Commit-Queue: Brian White <bcwhite@chromium.org>
Reviewed-by: Brian White <bcwhite@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819082}

tools/metrics/histograms/histograms_xml/password/histograms.xml

@@ -293,7 +293,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram base="true" name="PasswordManager.AccountStorageUserStateDuration"
-    units="ms" expires_after="2020-12-01">
+    units="ms" expires_after="M90">
 <!-- Name completed by histogram_suffixes name="PasswordAccountStorageUserState" -->
 
   <owner>mamir@chromium.org</owner>