Update {virtual,override} to follow C++11 style in components.

components/storage_monitor/storage_monitor_win.h

 // 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.
 
 #ifndef COMPONENTS_STORAGE_MONITOR_STORAGE_MONITOR_WIN_H_
 #define COMPONENTS_STORAGE_MONITOR_STORAGE_MONITOR_WIN_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 11 matching lines @@
 
 class StorageMonitorWin : public StorageMonitor {
  public:
   // Should only be called by browser start up code.
   // Use StorageMonitor::GetInstance() instead.
   // To support unit tests, this constructor takes |volume_mount_watcher| and
   // |portable_device_watcher| objects. These params are either constructed in
   // unit tests or in StorageMonitorWin CreateInternal() function.
   StorageMonitorWin(VolumeMountWatcherWin* volume_mount_watcher,
                     PortableDeviceWatcherWin* portable_device_watcher);
-  virtual ~StorageMonitorWin();
+  ~StorageMonitorWin() override;
 
   // Must be called after the file thread is created.
-  virtual void Init() override;
+  void Init() override;
 
   // StorageMonitor:
-  virtual bool GetStorageInfoForPath(const base::FilePath& path,
-                                     StorageInfo* device_info) const override;
-  virtual bool GetMTPStorageInfoFromDeviceId(
+  bool GetStorageInfoForPath(const base::FilePath& path,
+                             StorageInfo* device_info) const override;
+  bool GetMTPStorageInfoFromDeviceId(
       const std::string& storage_device_id,
       base::string16* device_location,
       base::string16* storage_object_id) const override;
 
-  virtual void EjectDevice(
+  void EjectDevice(
       const std::string& device_id,
       base::Callback<void(EjectStatus)> callback) override;
 
  private:
   class PortableDeviceNotifications;
   friend class TestStorageMonitorWin;
 
   void MediaChangeNotificationRegister();
 
   // Gets the removable storage information given a |device_path|. On success,
@@ skipping 26 matching lines @@
   // The portable device watcher, used to manage media transfer protocol
   // devices.
   scoped_ptr<PortableDeviceWatcherWin> portable_device_watcher_;
 
   DISALLOW_COPY_AND_ASSIGN(StorageMonitorWin);
 };
 
 }  // namespace storage_monitor
 
 #endif  // COMPONENTS_STORAGE_MONITOR_STORAGE_MONITOR_WIN_H_