Move sockets manifest types to //extensions.

extensions/extensions.gyp

 # Copyright 2013 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,
   },
   'targets': [
     {
@@ skipping 10 matching lines @@
         '../chrome/common/extensions/api/api.gyp:chrome_api',
         '../components/components.gyp:url_matcher',
         '../content/content.gyp:content_common',
       ],
       'include_dirs': [
         '..',
         '<(INTERMEDIATE_DIR)',
       ],
       'sources': [
         'common/api/messaging/message.h',
+        'common/api/sockets/sockets_manifest_handler.cc',
+        'common/api/sockets/sockets_manifest_handler.h',
+        'common/api/sockets/sockets_manifest_data.cc',
+        'common/api/sockets/sockets_manifest_data.h',
+        'common/api/sockets/sockets_manifest_permission.cc',
+        'common/api/sockets/sockets_manifest_permission.h',
         'common/common_manifest_handlers.cc',
         'common/common_manifest_handlers.h',
         'common/crx_file.cc',
         'common/crx_file.h',
         'common/csp_validator.cc',
         'common/csp_validator.h',
         'common/draggable_region.cc',
         'common/draggable_region.h',
         'common/error_utils.cc',
         'common/error_utils.h',
@@ skipping 337 matching lines @@
         'common/test_util.cc',
         'common/test_util.h',
         'common/value_builder.cc',
         'common/value_builder.h',
       ],
       # Disable c4267 warnings until we fix size_t to int truncations.
       'msvs_disabled_warnings': [ 4267, ],
     },
   ]
 }