Send data back from service using IPC, not file.

cloud_print/service/win/service_listener.h

Index: cloud_print/service/win/service_listener.h
diff --git a/cloud_print/service/win/service_listener.h b/cloud_print/service/win/service_listener.h
new file mode 100644
index 0000000000000000000000000000000000000000..ffb3aa6d4e9867f8135f4d23c90595c9035c897a
--- /dev/null
+++ b/cloud_print/service/win/service_listener.h
@@ -0,0 +1,41 @@
+// 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.
+
+#ifndef CLOUD_PRINT_SERVICE_SERVICE_LISTENER_H_
+#define CLOUD_PRINT_SERVICE_SERVICE_LISTENER_H_
+
+#include "base/compiler_specific.h"
+#include "base/files/file_path.h"
+#include "base/memory/scoped_ptr.h"
+#include "ipc/ipc_listener.h"
+
+namespace base {
+class Thread;
+}  // base
+
+namespace IPC {
+class Channel;
+}  // IPC
+
+// Simple IPC listener to run on service side to collect service environment and
+// to send back to setup utility.
+class ServiceListener : public IPC::Listener {
+ public:
+  explicit ServiceListener(const base::FilePath& user_data_dir);
+  virtual ~ServiceListener();
+
+  virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
+  virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
+
+ private:
+  void Disconnect();
+  void Connect();
+
+  scoped_ptr<base::Thread> ipc_thread_;
+  scoped_ptr<IPC::Channel> channel_;
+  base::FilePath user_data_dir_;
+};
+
+#endif  // CLOUD_PRINT_SERVICE_SERVICE_LISTENER_H_
+