Remove usage of FOR_EACH_OBSERVER macro in device/

device/generic_sensor/platform_sensor.cc

 // Copyright 2016 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 "device/generic_sensor/platform_sensor.h"
 
 #include <utility>
 
 #include "base/threading/thread_task_runner_handle.h"
 #include "device/generic_sensor/platform_sensor_provider.h"
@@ skipping 87 matching lines @@
 }
 
 void PlatformSensor::NotifySensorReadingChanged() {
   for (auto& client : clients_) {
     if (!client.IsNotificationSuspended())
       client.OnSensorReadingChanged();
   }
 }
 
 void PlatformSensor::NotifySensorError() {
-  FOR_EACH_OBSERVER(Client, clients_, OnSensorError());
+  for (auto& observer : clients_)
+    observer.OnSensorError();
 }
 
 bool PlatformSensor::UpdateSensorInternal(const ConfigMap& configurations) {
   const PlatformSensorConfiguration* optimal_configuration = nullptr;
   for (const auto& pair : configurations) {
     if (pair.first->IsNotificationSuspended())
       continue;
 
     const auto& conf_list = pair.second;
     for (const auto& configuration : conf_list) {
       if (!optimal_configuration || configuration > *optimal_configuration) {
         optimal_configuration = &configuration;
       }
     }
   }
 
   if (!optimal_configuration) {
     StopSensor();
     return true;
   }
 
   return StartSensor(*optimal_configuration);
 }
 
 }  // namespace device