Compile more Gallery targets in gyp v2.

ui/file_manager/file_manager/foreground/js/compiled_resources.gyp

 # Copyright 2014 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': 'main',
       'variables': {
         'depends': [
           '<@(cws_widget_container)',
@@ skipping 152 matching lines @@
           './main_window_component.js',
           './volume_manager_wrapper.js',
           './metadata/byte_reader.js',
         ],
         'externs': [
           '<(EXTERNS_DIR)/chrome_extensions.js',
           '<(EXTERNS_DIR)/chrome_send.js',
           '<(EXTERNS_DIR)/command_line_private.js',
           '<(EXTERNS_DIR)/file_manager_private.js',
           '<(EXTERNS_DIR)/metrics_private.js',
+          '<(EXTERNS_DIR)/web_animations.js',
           '../../../../../third_party/analytics/externs.js',
           '../../../externs/background_window.js',
           '../../../externs/background_window_common.js',
           '../../../externs/chrome_echo_private.js',
           '../../../externs/chrome_test.js',
           '../../../externs/chrome_webstore_widget_private.js',
           '../../../externs/connection.js',
           '../../../externs/css_rule.js',
           '../../../externs/directory_change_event.js',
           '../../../externs/entry_location.js',
@@ skipping 10 matching lines @@
           '../../../externs/webview_tag.js',
         ],
       },
       'includes': [
         '../../../../../components/chrome_apps/webstore_widget/cws_widget/compiled_resources.gypi',
         '../../../compile_js.gypi',
       ],
     }
   ],
 }