[Signin] Extend histograms

Extends Signin.AndroidAccountSigninViewSeedingTime and
Signin.AndroidGmsUpdatingDialogShownTime to M89 and adds a second owner.

Bug: 1089512
Change-Id: If92bf10d354685ea1d70f9e9beda3fc4545d0d16
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2435195Reviewed-by: Jesse Doherty <jwd@chromium.org>
Commit-Queue: Boris Sazonov <bsazonov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#813699}

tools/metrics/histograms/histograms_xml/signin/histograms.xml

@@ -96,8 +96,9 @@ prefs when the profile is loaded.  -->
 </histogram>
 
 <histogram name="Signin.AndroidAccountSigninViewSeedingTime" units="ms"
-    expires_after="M85">
+    expires_after="M89">
   <owner>bsazonov@chromium.org</owner>
+  <owner>chrome-signin-team@google.com</owner>
   <summary>
     The time it takes to seed accounts before proceeding to the account
     confirmation screen.
@@ -142,8 +143,9 @@ prefs when the profile is loaded.  -->
 </histogram>
 
 <histogram name="Signin.AndroidGmsUpdatingDialogShownTime" units="ms"
-    expires_after="M85">
+    expires_after="M89">
   <owner>bsazonov@chromium.org</owner>
+  <owner>chrome-signin-team@google.com</owner>
   <summary>
     How long the &quot;Waiting for Google Play Services to finish updating&quot;
     dialog is shown.