Add Transient FileSystem which goes away after its snapsot file is gone

content/content_tests.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': 'test_support_content',
       'type': 'static_library',
       'defines!': ['CONTENT_IMPLEMENTATION'],
@@ skipping 470 matching lines @@
         '../webkit/fileapi/native_file_util_unittest.cc',
         '../webkit/fileapi/obfuscated_file_util_unittest.cc',
         '../webkit/fileapi/sandbox_mount_point_provider_unittest.cc',
         '../webkit/fileapi/syncable/canned_syncable_file_system.cc',
         '../webkit/fileapi/syncable/canned_syncable_file_system.h',
         '../webkit/fileapi/syncable/file_change_unittest.cc',
         '../webkit/fileapi/syncable/local_file_change_tracker_unittest.cc',
         '../webkit/fileapi/syncable/local_file_sync_context_unittest.cc',
         '../webkit/fileapi/syncable/local_file_sync_status_unittest.cc',
         '../webkit/fileapi/syncable/syncable_file_system_unittest.cc',
+        '../webkit/fileapi/syncable/syncable_file_operation_runner_unittest.cc',
         '../webkit/fileapi/syncable/syncable_file_system_util_unittest.cc',
-        '../webkit/fileapi/syncable/syncable_file_operation_runner_unittest.cc',
         '../webkit/fileapi/test_file_set.cc',
         '../webkit/fileapi/test_file_set.h',
+        '../webkit/fileapi/transient_file_util_unittest.cc',
         '../webkit/fileapi/upload_file_system_file_element_reader_unittest.cc',
         '../webkit/fileapi/webfilewriter_base_unittest.cc',
         '../webkit/glue/cpp_variant_unittest.cc',
         '../webkit/glue/glue_serialize_unittest.cc',
         '../webkit/glue/resource_request_body_unittest.cc',
         '../webkit/glue/multipart_response_delegate_unittest.cc',
         '../webkit/glue/touch_fling_gesture_curve_unittest.cc',
         '../webkit/glue/webcursor_unittest.cc',
         '../webkit/glue/webkit_glue_unittest.cc',
         '../webkit/glue/worker_task_runner_unittest.cc',
@@ skipping 601 matching lines @@
             'resource_dir': 'shell/android/shell_apk/res',
             'additional_src_dirs': ['public/android/javatests/',],
             'is_test_apk': 1,
           },
           'includes': [ '../build/java_apk.gypi' ],
         },
       ],
     }],
   ],
 }