Implement newly designed sign-in related histograms for desktop platorms.

chrome/browser/ui/user_manager.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/user_manager.h"
 
 #include "chrome/browser/signin/signin_promo.h"
 #include "components/guest_view/browser/guest_view_manager.h"
 #include "google_apis/gaia/gaia_urls.h"
 
@@ skipping 26 matching lines @@
   if (url.ReplaceComponents(replacements) ==
         GaiaUrls::GetInstance()->signin_completed_continue_url()) {
     CloseReauthDialog();
     return;
   }
 
   // If still observing the top level web contents, try to find the embedded
   // webview and observe it instead.  The webview may not be found in the
   // initial page load since it loads asynchronously.
   if (url.GetOrigin() !=
-        signin::GetReauthURLWithEmail(email_address_).GetOrigin()) {
+      signin::GetReauthURLWithEmail(
+          signin_metrics::AccessPoint::ACCESS_POINT_USER_MANAGER,
+          signin_metrics::Reason::REASON_UNLOCK, email_address_)
+          .GetOrigin()) {
     return;
   }
 
   std::set<content::WebContents*> content_set;
   guest_view::GuestViewManager* manager =
       guest_view::GuestViewManager::FromBrowserContext(
           web_contents()->GetBrowserContext());
   if (manager)
     manager->ForEachGuest(web_contents(), base::Bind(&AddToSet, &content_set));
   DCHECK_LE(content_set.size(), 1U);
   if (!content_set.empty())
     Observe(*content_set.begin());
 }