Add IsAuthenticated() method to SigninManager.

chrome/browser/metrics/signin_status_metrics_provider.cc

 // Copyright 2014 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/metrics/signin_status_metrics_provider.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 74 matching lines @@
   if (signin_status_ == MIXED_SIGNIN_STATUS)
     return;
 
   SigninManager* manager = SigninManagerFactory::GetForProfile(
       browser->profile());
 
   // Nothing will change if the opened browser is in incognito mode.
   if (!manager)
     return;
 
-  const bool signed_in = !manager->GetAuthenticatedUsername().empty();
+  const bool signed_in = manager->IsAuthenticated();
   UpdateStatusWhenBrowserAdded(signed_in);
 }
 
 void SigninStatusMetricsProvider::SigninManagerCreated(
     SigninManagerBase* manager) {
   // Whenever a new profile is created, a new SigninManagerBase will be created
   // for it. This ensures that all sign-in or sign-out actions of all opened
   // profiles are being monitored.
   scoped_observer_.Add(manager);
 
   // If the status is unknown, it means this is the first created
   // SigninManagerBase and the corresponding profile should be the only opened
   // profile.
   if (signin_status_ == UNKNOWN_SIGNIN_STATUS) {
     size_t signed_in_count =
-        manager->GetAuthenticatedUsername().empty() ? 0 : 1;
+        manager->IsAuthenticated() ? 1 : 0;
     UpdateInitialSigninStatus(1, signed_in_count);
   }
 }
 
 void SigninStatusMetricsProvider::SigninManagerShutdown(
     SigninManagerBase* manager) {
   if (scoped_observer_.IsObserving(manager))
     scoped_observer_.Remove(manager);
 }
 
@@ skipping 81 matching lines @@
   for (size_t i = 0; i < profile_list.size(); ++i) {
 #if !defined(OS_ANDROID)
     if (chrome::GetTotalBrowserCountForProfile(profile_list[i]) == 0) {
       // The profile is loaded, but there's no opened browser for this profile.
       continue;
     }
 #endif
     opened_profiles_count++;
     SigninManager* manager = SigninManagerFactory::GetForProfile(
         profile_list[i]->GetOriginalProfile());
-    if (manager && !manager->GetAuthenticatedUsername().empty())
+    if (manager && manager->IsAuthenticated())
       signed_in_profiles_count++;
   }
   UpdateInitialSigninStatus(opened_profiles_count, signed_in_profiles_count);
 }
 
 SigninStatusMetricsProvider::ProfilesSigninStatus
 SigninStatusMetricsProvider::GetSigninStatusForTesting() {
   return signin_status_;
 }