Re-instate ui/*compiled_resources*.gyp files

ui/file_manager/audio_player/js/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': 'audio_player',
+#      'includes': ['../../compile_js2.gypi'],
+#    },
+#    {
+#      'target_name': 'background',
+#      'includes': ['../../compile_js2.gypi'],
+#    },
+    {
+      'target_name': 'error_util',
+      'includes': ['../../compile_js2.gypi'],
+    },
+    {
+      'target_name': 'metadata_worker',
+      'includes': ['../../compile_js2.gypi'],
+    },
+#    {
+#      'target_name': 'test_util',
+#      'includes': ['../../compile_js2.gypi'],
+#    },
+  ],
+}