Split Mandoline-specific components out of mojo:core_services.

mandoline/tools/data/FILES.cfg

 # -*- python -*-
 # ex: set syntax=python:
 
 # Copyright 2015 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.
 
 # This is a buildbot configuration file containing a tagged list of files
 # processed by the chromium_mojo.py recipe. The known tags are:
 #
@@ skipping 33 matching lines @@
   },
   {
     'filepath': 'mandoline',
     'platforms': ['linux'],
   },
   {
     'filepath': 'mandoline.exe',
     'platforms': ['win'],
   },
   {
+    'filepath': 'omnibox',
+    'platforms': ['linux', 'win'],
+    'directory': True,
+  },
+  {
     'filepath': 'pdf_viewer',
     'platforms': ['linux', 'win'],
     'directory': True,
   },
 ]