Supporting more APIs with json_schema_compiler

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.
 
 {
   'variables': {
     'chromium_code': 1,
     'json_schema_files': [
       'permissions.json',
+      'experimental.declarative.json',
+      'tabs.json',
+      'windows.json',
     ],
     'cc_dir': 'chrome/common/extensions/api',
     'root_namespace': 'extensions::api',
   },
   'targets': [
     {
       'target_name': 'api',
       'type': 'static_library',
       'sources': [
         '<@(json_schema_files)',
       ],
       'includes': ['../../../../build/json_schema_compile.gypi'],
     },
   ],
 }