content: Use base::MessageLoop.

content/browser/device_monitor_linux.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.
 
 // libudev is used for monitoring device changes.
 
 #include "content/browser/device_monitor_linux.h"
 
 #include <libudev.h>
 
@@ skipping 31 matching lines @@
       base::Bind(&DeviceMonitorLinux::Initialize, base::Unretained(this)));
 }
 
 DeviceMonitorLinux::~DeviceMonitorLinux() {
 }
 
 void DeviceMonitorLinux::Initialize() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   // We want to be notified of IO message loop destruction to delete |udev_|.
-  MessageLoop::current()->AddDestructionObserver(this);
+  base::MessageLoop::current()->AddDestructionObserver(this);
 
   std::vector<UdevLinux::UdevMonitorFilter> filters;
   for (size_t i = 0; i < arraysize(kSubsystemMap); ++i) {
     filters.push_back(UdevLinux::UdevMonitorFilter(
         kSubsystemMap[i].subsystem, kSubsystemMap[i].devtype));
   }
   udev_.reset(new UdevLinux(filters,
       base::Bind(&DeviceMonitorLinux::OnDevicesChanged,
                  base::Unretained(this))));
 }
@@ skipping 15 matching lines @@
       device_type = kSubsystemMap[i].device_type;
       break;
     }
   }
   DCHECK_NE(device_type, base::SystemMonitor::DEVTYPE_UNKNOWN);
 
   base::SystemMonitor::Get()->ProcessDevicesChanged(device_type);
 }
 
 }  // namespace content