[StorageMonitor] Handle EjectDevice call for MTP devices

chrome/browser/storage_monitor/storage_monitor_chromeos.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.
 
 // chromeos::StorageMonitorCros implementation.
 
 #include "chrome/browser/storage_monitor/storage_monitor_chromeos.h"
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 229 matching lines @@
     chromeos::MountError error_code) {
   if (error_code == MOUNT_ERROR_NONE)
     callback.Run(chrome::StorageMonitor::EJECT_OK);
   else
     callback.Run(chrome::StorageMonitor::EJECT_FAILURE);
 }
 
 void StorageMonitorCros::EjectDevice(
     const std::string& device_id,
     base::Callback<void(EjectStatus)> callback) {
+  StorageInfo::Type type;
+  if (!StorageInfo::CrackDeviceId(device_id, &type, NULL)) {
+    callback.Run(EJECT_FAILURE);
+    return;
+  }
+
+  if (type == StorageInfo::MTP_OR_PTP) {
+    media_transfer_protocol_device_observer_->EjectDevice(device_id, callback);
+    return;
+  }
+
   std::string mount_path;
   for (MountMap::const_iterator info_it = mount_map_.begin();
        info_it != mount_map_.end(); ++info_it) {
     if (info_it->second.device_id() == device_id)
       mount_path = info_it->first;
   }
 
   if (mount_path.empty()) {
     callback.Run(EJECT_NO_SUCH_DEVICE);
     return;
@@ skipping 40 matching lines @@
 
 }  // namespace chromeos
 
 namespace chrome {
 
 StorageMonitor* StorageMonitor::Create() {
   return new chromeos::StorageMonitorCros();
 }
 
 }  // namespace chrome