[Signin][Android] Extend Profile.AndroidAccountManagementMenu

Extends "Profile.AndroidAccountManagementMenu" histogram by 6 months.

Bug: 1127958
Change-Id: Id3aad1a26848a3ea0267aa3dafc8cd3f07e031f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2479171
Auto-Submit: Boris Sazonov <bsazonov@chromium.org>
Commit-Queue: Boris Sazonov <bsazonov@chromium.org>
Commit-Queue: Jesse Doherty <jwd@chromium.org>
Reviewed-by: Jesse Doherty <jwd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818948}

tools/metrics/histograms/histograms_xml/profile/histograms.xml

@@ -58,7 +58,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Profile.AndroidAccountManagementMenu"
-    enum="ProfileAndroidAccountManagementMenu" expires_after="2020-10-26">
+    enum="ProfileAndroidAccountManagementMenu" expires_after="2021-04-26">
   <owner>bsazonov@chromium.org</owner>
   <owner>chrome-signin-team@google.com</owner>
   <summary>