Closure compile JS files with GYP.

ui/webui/resources/js/chromeos/compiled_resources.gyp

Index: ui/webui/resources/js/chromeos/compiled_resources.gyp
diff --git a/ui/webui/resources/js/chromeos/compiled_resources.gyp b/ui/webui/resources/js/chromeos/compiled_resources.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..6231af1379e22eb05d845f5d54b342eede06ad99
--- /dev/null
+++ b/ui/webui/resources/js/chromeos/compiled_resources.gyp
@@ -0,0 +1,17 @@
+# 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': 'ui_account_tweaks',
+      'variables': {
+        'depends': [
+          '../cr.js',
+          '../load_time_data.js'
+        ],
+      },
+      'includes': ['../../../../../third_party/closure_compiler/compile_js.gypi'],
+    },
+  ]
+}