Reduce usage of FOR_EACH_OBSERVER macro in chrome/browser/signin

chrome/browser/sync/sessions/sessions_sync_manager_unittest.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 "components/sync_sessions/sessions_sync_manager.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 169 matching lines @@
   void AddLocalChangeObserver(syncer::LocalChangeObserver* observer) override {
     local_change_observers_.AddObserver(observer);
   }
   void RemoveLocalChangeObserver(
       syncer::LocalChangeObserver* observer) override {
     local_change_observers_.RemoveObserver(observer);
   }
 
   void NotifyLocalChangeObservers() {
     const syncer::SyncChange empty_change;
-    FOR_EACH_OBSERVER(syncer::LocalChangeObserver, local_change_observers_,
-                      OnLocalChange(NULL, empty_change));
+    for (syncer::LocalChangeObserver& observer : local_change_observers_)
+      observer.OnLocalChange(NULL, empty_change);
   }
 
   void FailProcessSyncChangesWith(const syncer::SyncError& error) {
     error_ = error;
   }
 
   void SetSyncDataToReturn(const syncer::SyncDataList& data) {
     sync_data_to_return_ = data;
   }
 
@@ skipping 2402 matching lines @@
   base::Time last_time;
   for (size_t i = 0; i < tabs.size(); ++i) {
     base::Time this_time = tabs[i]->timestamp;
     if (i > 0)
       ASSERT_GE(last_time, this_time);
     last_time = tabs[i]->timestamp;
   }
 }
 
 }  // namespace sync_sessions