Introduce profile for lock screen apps

chrome/browser/chromeos/file_manager/volume_manager.cc

 // Copyright 2013 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/file_manager/volume_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
@@ skipping 330 matching lines @@
 
 VolumeManager::~VolumeManager() {
 }
 
 VolumeManager* VolumeManager::Get(content::BrowserContext* context) {
   return VolumeManagerFactory::Get(context);
 }
 
 void VolumeManager::Initialize() {
   // If in Sign in profile, then skip mounting and listening for mount events.
-  if (chromeos::ProfileHelper::IsSigninProfile(profile_))
+  if (chromeos::ProfileHelper::IsSigninProfile(profile_) ||
+      chromeos::ProfileHelper::IsLockScreenAppProfile(profile_)) {
     return;
+  }
 
   // Register 'Downloads' folder for the profile to the file system.
   const base::FilePath downloads =
       file_manager::util::GetDownloadsFolderForProfile(profile_);
   const bool success = RegisterDownloadsMountPoint(profile_, downloads);
   DCHECK(success);
 
   DoMountEvent(chromeos::MOUNT_ERROR_NONE,
                Volume::CreateForDownloads(downloads));
 
@@ skipping 633 matching lines @@
     // |mounted_volumes_|, because OnVolumeMounted() will access it.
     volume_ref = std::move(iter->second);
     mounted_volumes_.erase(iter);
   }
 
   for (auto& observer : observers_)
     observer.OnVolumeUnmounted(error_code, volume);
 }
 
 }  // namespace file_manager