[CrosDisksClient] Determine device type from DeviceMediaType property sent by cros-disks.

chrome/browser/chromeos/disks/disk_mount_manager.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
 #include "chrome/browser/chromeos/disks/disk_mount_manager.h"
 
 #include <map>
 #include <set>
 
 #include <sys/statvfs.h>
 
@@ skipping 613 matching lines @@
     return MOUNT_TYPE_DEVICE;
   else if (type_str == "network")
     return MOUNT_TYPE_NETWORK_STORAGE;
   else if (type_str == "file")
     return MOUNT_TYPE_ARCHIVE;
   else
     return MOUNT_TYPE_INVALID;
 }
 
 // static
+std::string DiskMountManager::DeviceTypeToString(DeviceType type) {
+  switch (type) {
+    case DEVICE_TYPE_USB:
+      return "usb";
+    case DEVICE_TYPE_SD:
+      return "sd";
+    case DEVICE_TYPE_OPTICAL_DISC:
+      return "optical";
+    case DEVICE_TYPE_MOBILE:
+      return "mobile";
+    default:
+      return "unknown";
+  }
+}
+
+// static
 void DiskMountManager::Initialize() {
   if (g_disk_mount_manager) {
     LOG(WARNING) << "DiskMountManager was already initialized";
     return;
   }
   g_disk_mount_manager = new DiskMountManagerImpl();
   VLOG(1) << "DiskMountManager initialized";
 }
 
 // static
@@ skipping 18 matching lines @@
   VLOG(1) << "DiskMountManager Shutdown completed";
 }
 
 // static
 DiskMountManager* DiskMountManager::GetInstance() {
   return g_disk_mount_manager;
 }
 
 }  // namespace disks
 }  // namespace chromeos