Enable building with configuration_policy==1 on ios.

chrome/chrome.gyp

 # Copyright (c) 2012 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': {
     'chromium_code': 1,
 
     # Define the common dependencies that contain all the actual
     # Chromium functionality.  This list gets pulled in below by
     # the link of the actual chrome (or chromium) executable on
@@ skipping 997 matching lines @@
           },
           'includes': [
             '../build/java.gypi',
           ],
         },
       ], # 'targets'
       'includes': [
         'chrome_android.gypi',
       ]}, # 'includes'
     ],  # OS=="android"
-    ['configuration_policy==1 and OS!="android"', {
+    ['configuration_policy==1 and OS!="android" and OS!="ios"', {
       'includes': [ 'policy.gypi', ],
     }],
     ['enable_printing==1', {
       'targets': [
         {
           'target_name': 'service',
           'type': 'static_library',
           'variables': { 'enable_wexit_time_destructors': 1, },
           'dependencies': [
             'chrome_resources.gyp:chrome_strings',
@@ skipping 76 matching lines @@
               'sources': [
                 'service/cloud_print/print_system_dummy.cc',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }