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diff --git a/ipc/chromium/src/chrome/common/child_process.h b/ipc/chromium/src/chrome/common/child_process.h
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+++ b/ipc/chromium/src/chrome/common/child_process.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2006-2008 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 CHROME_COMMON_CHILD_PROCESS_H__
+#define CHROME_COMMON_CHILD_PROCESS_H__
+
+#include <string>
+#include <vector>
+#include "base/basictypes.h"
+#include "base/message_loop.h"
+#include "base/waitable_event.h"
+#include "mozilla/UniquePtr.h"
+
+class ChildThread;
+
+// Base class for child processes of the browser process (i.e. renderer and
+// plugin host). This is a singleton object for each child process.
+class ChildProcess {
+ public:
+  // Child processes should have an object that derives from this class.  The
+  // constructor will return once ChildThread has started.
+  explicit ChildProcess(ChildThread* child_thread);
+  virtual ~ChildProcess();
+
+  // Getter for this process' main thread.
+  ChildThread* child_thread() { return child_thread_.get(); }
+
+  // Getter for the one ChildProcess object for this process.
+  static ChildProcess* current() { return child_process_; }
+
+ private:
+  // NOTE: make sure that child_thread_ is listed before shutdown_event_, since
+  // it depends on it (indirectly through IPC::SyncChannel).
+  mozilla::UniquePtr<ChildThread> child_thread_;
+
+  // The singleton instance for this process.
+  static ChildProcess* child_process_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(ChildProcess);
+};
+
+#endif  // CHROME_COMMON_CHILD_PROCESS_H__