Update Windows System Monitor Removable Device Impl.

chrome/browser/system_monitor/media_storage_util.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.
 
 // chrome::MediaStorageUtil implementation.
 
 #include "chrome/browser/system_monitor/media_storage_util.h"
 
 #include <vector>
 
@@ skipping 217 matching lines @@
     return false;
 
   if (g_test_get_device_info_from_path_function) {
     return g_test_get_device_info_from_path_function(path, device_id,
                                                      device_name,
                                                      relative_path);
   }
 
   bool found_device = false;
   base::SystemMonitor::RemovableStorageInfo device_info;
-#if (defined(OS_LINUX) || defined(OS_MACOSX))
+#if defined(OS_LINUX) || defined(OS_MACOSX) || defined(OS_WIN)
   RemovableDeviceNotifications* notifier =
       RemovableDeviceNotifications::GetInstance();
   found_device = notifier->GetDeviceInfoForPath(path, &device_info);
 #endif
 
 #if defined(OS_CHROMEOS)
   if (!found_device) {
     chromeos::mtp::MediaTransferProtocolDeviceObserverCros* mtp_manager =
         chromeos::mtp::MediaTransferProtocolDeviceObserverCros::GetInstance();
     found_device = mtp_manager->GetStorageInfoForPath(path, &device_info);
   }
 #endif
 
   if (found_device && IsRemovableDevice(device_info.device_id)) {
     if (device_id)
       *device_id = device_info.device_id;
     if (device_name)
       *device_name = device_info.name;
     if (relative_path) {
       *relative_path = FilePath();
       FilePath mount_point(device_info.location);
       mount_point.AppendRelativePath(path, relative_path);
     }
     return true;
   }
 
+  // On Posix systems, there's one root so any absolute path could be valid.
+#if !defined(OS_POSIX)
+  if (!found_device)
+    return false;
+#endif
+
   if (device_id)
     *device_id = MakeDeviceId(FIXED_MASS_STORAGE, path.AsUTF8Unsafe());
   if (device_name)
     *device_name = path.BaseName().LossyDisplayName();
   if (relative_path)
     *relative_path = FilePath();
   return true;
 }
 
 // static
@@ skipping 39 matching lines @@
 
 // static
 void MediaStorageUtil::SetGetDeviceInfoFromPathFunctionForTesting(
     GetDeviceInfoFromPathFunction function) {
   g_test_get_device_info_from_path_function = function;
 }
 
 MediaStorageUtil::MediaStorageUtil() {}
 
 }  // namespace chrome