Remove usage of FOR_EACH_OBSERVER macro in components/sync

components/sync/driver/backend_migrator.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/sync/driver/backend_migrator.h"
 
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 63 matching lines @@
     const MigrationObserver* observer) const {
   return migration_observers_.HasObserver(observer);
 }
 
 void BackendMigrator::RemoveMigrationObserver(MigrationObserver* observer) {
   migration_observers_.RemoveObserver(observer);
 }
 
 void BackendMigrator::ChangeState(State new_state) {
   state_ = new_state;
-  FOR_EACH_OBSERVER(MigrationObserver, migration_observers_,
-                    OnMigrationStateChange());
+  for (auto& observer : migration_observers_)
+    observer.OnMigrationStateChange();
 }
 
 bool BackendMigrator::TryStart() {
   DCHECK_EQ(state_, WAITING_TO_START);
   if (manager_->state() == DataTypeManager::CONFIGURED) {
     RestartMigration();
     return true;
   }
   return false;
 }
@@ skipping 113 matching lines @@
 
 ModelTypeSet BackendMigrator::GetPendingMigrationTypesForTest() const {
   return to_migrate_;
 }
 
 #undef SDVLOG
 
 #undef SLOG
 
 };  // namespace syncer