Remove usage of FOR_EACH_OBSERVER macro in components/

components/data_usage/core/data_use_aggregator.cc

 // Copyright 2015 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/data_usage/core/data_use_aggregator.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 110 matching lines @@
   if (amortization_callback_.is_null()) {
     amortization_callback_ =
         base::Bind(&DataUseAggregator::OnAmortizationComplete, GetWeakPtr());
   }
   amortizer_->AmortizeDataUse(std::move(data_use), amortization_callback_);
 }
 
 void DataUseAggregator::OnAmortizationComplete(
     std::unique_ptr<DataUse> amortized_data_use) {
   DCHECK(thread_checker_.CalledOnValidThread());
-  FOR_EACH_OBSERVER(Observer, observer_list_, OnDataUse(*amortized_data_use));
+  for (Observer& observer : observer_list_)
+    observer.OnDataUse(*amortized_data_use);
 }
 
 }  // namespace data_usage