[Passwords] Extend Http Migration Histograms

This change extends the Http Migration Password Manager histograms and
makes jdoerrie@ the primary owner.

R=chromium-metrics-reviews@google.com

Fixed: 1165117
Change-Id: I79ae58d058d5bf5d99df5e77473415e222704d60
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2635660
Auto-Submit: Jan Wilken Dörrie <jdoerrie@chromium.org>
Commit-Queue: Robert Kaplow <rkaplow@chromium.org>
Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844527}

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

@@ -1206,7 +1206,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="PasswordManager.HttpCredentials"
-    enum="PasswordManagerHttpCredentialType" expires_after="M90">
+    enum="PasswordManagerHttpCredentialType" expires_after="M95">
   <owner>jdoerrie@chromium.org</owner>
   <owner>vasilii@chromium.org</owner>
   <summary>
@@ -1218,9 +1218,9 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="PasswordManager.HttpPasswordMigrationCount"
-    units="saved credentials" expires_after="M90">
-  <owner>vasilii@chromium.org</owner>
+    units="saved credentials" expires_after="M95">
   <owner>jdoerrie@chromium.org</owner>
+  <owner>vasilii@chromium.org</owner>
   <summary>
     Number of HTTP saved passwords that were migrated to HTTPS. Recorded on
     HTTPS password form load when there are no credentials saved.
@@ -1228,7 +1228,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="PasswordManager.HttpPasswordMigrationMode"
-    enum="HttpPasswordMigrationMode" expires_after="M90">
+    enum="HttpPasswordMigrationMode" expires_after="M95">
   <owner>jdoerrie@chromium.org</owner>
   <owner>vasilii@chromium.org</owner>
   <summary>