Move GetUdevDevicePropertyValue from components/storage_monitor to device/udev_linux and rename to …

device/udev_linux/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 "device/udev_linux/udev.h"
 
 #include "device/udev_linux/udev_loader.h"
 
 namespace device {
 
@@ skipping 128 matching lines @@
 }
 
 void udev_set_log_priority(struct udev* udev, int priority) {
   return UdevLoader::Get()->udev_set_log_priority(udev, priority);
 }
 
 void udev_unref(udev* udev) {
   UdevLoader::Get()->udev_unref(udev);
 }
 
+std::string UdevDeviceGetPropertyValue(udev_device* udev_device,
+                                       const char* key) {
+  const char* value = device::udev_device_get_property_value(udev_device, key);
+  return value ? value : std::string();
+}
+
 }  // namespace device