Remove usage of FOR_EACH_OBSERVER macro in components/signin

components/signin/core/browser/about_signin_internals.cc

 // Copyright (c) 2012 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 "components/signin/core/browser/about_signin_internals.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 264 matching lines @@
       signin_status_.ToValue(account_tracker_, signin_manager_,
                              signin_error_controller_, token_service_,
                              cookie_manager_service_, product_version);
 
   // TODO(robliao): Remove ScopedTracker below once https://crbug.com/422460 is
   // fixed.
   tracked_objects::ScopedTracker tracking_profile1(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "422460 AboutSigninInternals::NotifyObservers1"));
 
-  FOR_EACH_OBSERVER(AboutSigninInternals::Observer,
-                    signin_observers_,
-                    OnSigninStateChanged(signin_status_value.get()));
+  for (auto& observer : signin_observers_)
+    observer.OnSigninStateChanged(signin_status_value.get());
 }
 
 std::unique_ptr<base::DictionaryValue> AboutSigninInternals::GetSigninStatus() {
   return signin_status_.ToValue(
       account_tracker_, signin_manager_, signin_error_controller_,
       token_service_, cookie_manager_service_, client_->GetProductVersion());
 }
 
 void AboutSigninInternals::OnAccessTokenRequested(
     const std::string& account_id,
@@ skipping 95 matching lines @@
   }
 
   if (gaia_accounts.size() == 0) {
     AddCookieEntry(cookie_info,
                    "No Accounts Present.",
                    std::string(),
                    std::string());
   }
 
   // Update the observers that the cookie's accounts are updated.
-  FOR_EACH_OBSERVER(AboutSigninInternals::Observer,
-                    signin_observers_,
-                    OnCookieAccountsFetched(&cookie_status));
+  for (auto& observer : signin_observers_)
+    observer.OnCookieAccountsFetched(&cookie_status);
 }
 
 AboutSigninInternals::TokenInfo::TokenInfo(
     const std::string& consumer_id,
     const OAuth2TokenService::ScopeSet& scopes)
     : consumer_id(consumer_id),
       scopes(scopes),
       request_time(base::Time::Now()),
       error(GoogleServiceAuthError::AuthErrorNone()),
       removed_(false) {}
@@ skipping 255 matching lines @@
   }
 
   for(const std::string& account_id : accounts_in_token_service) {
     std::unique_ptr<base::DictionaryValue> entry(new base::DictionaryValue());
     entry->SetString("accountId", account_id);
     account_info->Append(std::move(entry));
   }
 
   return signin_status;
 }