Refactor "IsUnderDriveMountPoint" in v2 app code for generalization to non-Drive volumes.

chrome/chrome_browser_chromeos.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser_chromeos',
       'type': 'static_library',
@@ skipping 335 matching lines @@
         'browser/chromeos/file_manager/app_installer.cc',
         'browser/chromeos/file_manager/app_installer.h',
         'browser/chromeos/file_manager/file_browser_handlers.cc',
         'browser/chromeos/file_manager/file_browser_handlers.h',
         'browser/chromeos/file_manager/file_tasks.cc',
         'browser/chromeos/file_manager/file_tasks.h',
         'browser/chromeos/file_manager/file_watcher.cc',
         'browser/chromeos/file_manager/file_watcher.h',
         'browser/chromeos/file_manager/fileapi_util.cc',
         'browser/chromeos/file_manager/fileapi_util.h',
+        'browser/chromeos/file_manager/filesystem_api_util.cc',
+        'browser/chromeos/file_manager/filesystem_api_util.h',
         'browser/chromeos/file_manager/mime_util.cc',
         'browser/chromeos/file_manager/mime_util.h',
         'browser/chromeos/file_manager/mounted_disk_monitor.cc',
         'browser/chromeos/file_manager/mounted_disk_monitor.h',
         'browser/chromeos/file_manager/open_util.cc',
         'browser/chromeos/file_manager/open_util.h',
         'browser/chromeos/file_manager/open_with_browser.cc',
         'browser/chromeos/file_manager/open_with_browser.h',
         'browser/chromeos/file_manager/path_util.cc',
         'browser/chromeos/file_manager/path_util.h',
@@ skipping 785 matching lines @@
         'browser/chromeos/attestation/attestation_signed_data.proto',
       ],
       'variables': {
         'proto_in_dir': 'browser/chromeos/attestation',
         'proto_out_dir': 'chrome/browser/chromeos/attestation',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }