Restore missing compile_js*.gypi.

ui/file_manager/compile_js2.gypi

Index: ui/file_manager/compile_js2.gypi
diff --git a/ui/file_manager/compile_js2.gypi b/ui/file_manager/compile_js2.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..3c54a8eafb7d0ef64499fa2eb8ff04c35540dbbb
--- /dev/null
+++ b/ui/file_manager/compile_js2.gypi
@@ -0,0 +1,12 @@
+# 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.
+{
+ 'variables': {
+    'closure_args': [
+      '<@(default_closure_args)',
+      'warning_level=VERBOSE',
+    ],
+  },
+  'includes': ['../../third_party/closure_compiler/compile_js2.gypi'],
+}