Prolong password import histograms.

Fixed: 1089228
Change-Id: I4d0ac52cc4a7442851ff7a929b1e6dedf2873529
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2228496Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Vasilii Sukhanov <vasilii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775028}

tools/metrics/histograms/histograms.xml

@@ -121167,14 +121167,16 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="PasswordManager.ImportedPasswordsPerUserInCSV" units="units"
-    expires_after="M85">
+    expires_after="M90">
   <owner>vasilii@chromium.org</owner>
+  <owner>src/components/password_manager/OWNERS</owner>
   <summary>The number of passwords imported in CSV format per user</summary>
 </histogram>
 
 <histogram name="PasswordManager.ImportPasswordFromCSVResult"
-    enum="PasswordImportFromCSVResult" expires_after="M85">
+    enum="PasswordImportFromCSVResult" expires_after="M90">
   <owner>vasilii@chromium.org</owner>
+  <owner>src/components/password_manager/OWNERS</owner>
   <summary>
     The response code of successful or failed password import attempt from a CSV
     file.