Compile most of file_manager/background scripts in v2.

ui/file_manager/externs/compiled_resources2.gyp

 # Copyright 2016 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': 'app_window_common',
       'includes': ['../../../third_party/closure_compiler/include_js.gypi'],
     },
     {
@@ skipping 98 matching lines @@
     },
     {
       'target_name': 'platform',
       'includes': ['../../../third_party/closure_compiler/include_js.gypi'],
     },
     {
       'target_name': 'platform_worker',
       'includes': ['../../../third_party/closure_compiler/include_js.gypi'],
     },
     {
+      'target_name': 'progress_center_panel',
+      'includes': ['../../../third_party/closure_compiler/include_js.gypi'],
+    },
+    {
       'target_name': 'video_player_foreground',
       'includes': ['../../../third_party/closure_compiler/include_js.gypi'],
     },
     {
       'target_name': 'volume_info',
       'includes': ['../../../third_party/closure_compiler/include_js.gypi'],
     },
     {
       'target_name': 'volume_info_list',
       'includes': ['../../../third_party/closure_compiler/include_js.gypi'],
     },
     {
       'target_name': 'volume_manager',
       'includes': ['../../../third_party/closure_compiler/include_js.gypi'],
     },
     {
       'target_name': 'webview_tag',
       'includes': ['../../../third_party/closure_compiler/include_js.gypi'],
     },
   ],
 }