Put more files under the enable_service_discovery build flag.

chrome/common/extensions/api/schemas.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.
 
 {
   'sources': [
     '<@(schema_files)',
   ],
   'variables': {
     'main_schema_files': [
@@ skipping 117 matching lines @@
       'wallpaper.json',
       'wallpaper_private.json',
     ],
     'chromeos_non_compiled_schema_files': [
       'chromeos_info_private.json',
       'media_player_private.json',
     ],
 
     # Non Android schemas.
     'non_android_schema_files': [
+      'launcher_page.idl',
+    ],
+
+    'service_discovery_schema_files': [
       'gcd_private.idl',
-      'launcher_page.idl',
       'mdns.idl',
     ],
 
     'webrtc_schema_files': [
       'cast_streaming_receiver_session.idl',
       'cast_streaming_rtp_stream.idl',
       'cast_streaming_session.idl',
       'cast_streaming_udp_transport.idl',
     ],
 
@@ skipping 20 matching lines @@
         ],
         'non_compiled_schema_files': [
           '<@(chromeos_non_compiled_schema_files)',
         ],
       }],
       ['OS=="linux" or OS=="win"', {
         'schema_files': [
           'input_ime.json',
         ],
       }],
+      ['OS!="android"', {
+        'schema_files': [
+          '<@(non_android_schema_files)',
+        ],
+      }],
+      ['enable_service_discovery==1', {
+        'schema_files': [
+          '<@(service_discovery_schema_files)',
+        ],
+      }],
       ['enable_webrtc==1', {
         'schema_files': [
           '<@(webrtc_schema_files)',
         ],
       }],
-      ['OS!="android"', {
-        'schema_files': [
-          '<@(non_android_schema_files)',
-        ],
-      }],
     ],
     'cc_dir': 'chrome/common/extensions/api',
     'root_namespace': 'extensions::api::%(namespace)s',
     'bundle_name': 'Chrome',
     'impl_dir_': 'chrome/browser/extensions/api',
   },
 }