Reduce FOR_EACH_OBSERVER usage in ui/

ui/events/ozone/device/udev/device_manager_udev.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 "ui/events/ozone/device/udev/device_manager_udev.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 130 matching lines @@
   // to handle broken connections here.
   TRACE_EVENT1("evdev", "UdevDeviceChange", "socket", fd);
 
   device::ScopedUdevDevicePtr device(
       device::udev_monitor_receive_device(monitor_.get()));
   if (!device)
     return;
 
   std::unique_ptr<DeviceEvent> event = ProcessMessage(device.get());
   if (event)
-    FOR_EACH_OBSERVER(
-        DeviceEventObserver, observers_, OnDeviceEvent(*event.get()));
+    for (DeviceEventObserver& observer : observers_)
+      observer.OnDeviceEvent(*event.get());
 }
 
 void DeviceManagerUdev::OnFileCanWriteWithoutBlocking(int fd) {
   NOTREACHED();
 }
 
 std::unique_ptr<DeviceEvent> DeviceManagerUdev::ProcessMessage(
     udev_device* device) {
   const char* path = device::udev_device_get_devnode(device);
   const char* action = device::udev_device_get_action(device);
@@ skipping 22 matching lines @@
   else if (!strcmp(action, "change"))
     action_type = DeviceEvent::CHANGE;
   else
     return nullptr;
 
   return base::MakeUnique<DeviceEvent>(device_type, action_type,
                                        base::FilePath(path));
 }
 
 }  // namespace ui