Reduce usage of FOR_EACH_OBSERVER macro in components/invalidation

components/invalidation/impl/invalidator_registrar.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/invalidation/impl/invalidator_registrar.h"
 
 #include <cstddef>
 #include <iterator>
 #include <utility>
 
@@ skipping 97 matching lines @@
       it->first->OnIncomingInvalidation(to_emit);
     }
   }
 }
 
 void InvalidatorRegistrar::UpdateInvalidatorState(InvalidatorState state) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DVLOG(1) << "New invalidator state: " << InvalidatorStateToString(state_)
       << " -> " << InvalidatorStateToString(state);
   state_ = state;
-  FOR_EACH_OBSERVER(InvalidationHandler, handlers_,
-                    OnInvalidatorStateChange(state));
+  for (auto& observer : handlers_)
+    observer.OnInvalidatorStateChange(state);
 }
 
 InvalidatorState InvalidatorRegistrar::GetInvalidatorState() const {
   DCHECK(thread_checker_.CalledOnValidThread());
   return state_;
 }
 
 std::map<std::string, ObjectIdSet>
 InvalidatorRegistrar::GetSanitizedHandlersIdsMap() {
   DCHECK(thread_checker_.CalledOnValidThread());
@@ skipping 11 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   return handlers_.HasObserver(handler);
 }
 
 void InvalidatorRegistrar::DetachFromThreadForTest() {
   DCHECK(thread_checker_.CalledOnValidThread());
   thread_checker_.DetachFromThread();
 }
 
 }  // namespace syncer