Add non_compiled_schema_files in api.gyp to disable schema model code.

chrome/common/extensions/api/api.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.
 
 {
   'targets': [
     {
       'target_name': 'api',
       'type': 'static_library',
       'sources': [
         '<@(schema_files)',
       ],
       # TODO(jschuh): http://crbug.com/167187 size_t -> int
       'msvs_disabled_warnings': [ 4267 ],
       'includes': [
         '../../../../build/json_schema_bundle_compile.gypi',
         '../../../../build/json_schema_compile.gypi',
       ],
       'variables': {
         'chromium_code': 1,
         'conditions': [
           ['OS!="android"', {
+            'schema_files_disable_compile': [

[Yoyo Zhou, 2013/10/16 21:07:44]

There should be a comment here explaining how this is different from
schema_files. And ideally, at least one schema file should be here.

[Haojian Wu, 2013/10/17 00:37:58]

Done.

+            ],
             'schema_files': [
               'activity_log_private.json',
               'adview.json',
               'alarms.idl',
               'app_current_window_internal.idl',
               'app_runtime.idl',
               'app_window.idl',
               'audio.idl',
               'autotest_private.idl',
               'bluetooth.idl',
@@ skipping 135 matching lines @@
       'conditions': [
         ['chromeos==1', {
           'dependencies': [
             '<(DEPTH)/chrome/chrome.gyp:drive_proto',
           ],
         }],
       ],
     },
   ],
 }