Move OmahaQueryParams to a component and add a delegate interface.

components/omaha_query_params.gypi

 # 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': 'autocomplete',
+      'target_name': 'omaha_query_params',
       'type': 'static_library',
+      'include_dirs': [
+        '..',
+      ],
       'dependencies': [
         '../base/base.gyp:base',
       ],
-      'include_dirs': [
-        '..',
-      ],
       'sources': [
-        'autocomplete/url_prefix.cc',
-        'autocomplete/url_prefix.h',
+        'omaha_query_params/omaha_query_params.cc',
+        'omaha_query_params/omaha_query_params.h',
+        'omaha_query_params/omaha_query_params_delegate.cc',
+        'omaha_query_params/omaha_query_params_delegate.h',
       ],
     },
   ],
 }