Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/extensions/api/socket/socket_api.cc

 // 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.
 
 #include "chrome/browser/extensions/api/socket/socket_api.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/containers/hash_tables.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/api/dns/host_resolver_wrapper.h"
 #include "chrome/browser/extensions/api/socket/socket.h"
 #include "chrome/browser/extensions/api/socket/tcp_socket.h"
 #include "chrome/browser/extensions/api/socket/udp_socket.h"
-#include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/io_thread.h"
 #include "chrome/common/extensions/permissions/socket_permission.h"
+#include "extensions/browser/extension_system.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/permissions/permissions_data.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/io_buffer.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
 #include "net/base/net_util.h"
 
 namespace extensions {
@@ skipping 862 matching lines @@
     return;
   }
 
   base::ListValue* values = new base::ListValue();
   values->AppendStrings((std::vector<std::string>&)
       static_cast<UDPSocket*>(socket)->GetJoinedGroups());
   SetResult(values);
 }
 
 }  // namespace extensions