Move ZygoteForkDelegateLinux to content/public/app.

chrome/common/nacl_fork_delegate_linux.h

-// Copyright (c) 2011 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_NACL_FORK_DELEGATE_LINUX_H_
-#define CHROME_COMMON_NACL_FORK_DELEGATE_LINUX_H_
-#pragma once
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "content/common/zygote_fork_delegate_linux.h"
-
-// The NaClForkDelegate is created during Chrome linux zygote
-// initialization, and provides "fork()" functionality with
-// NaCl specific process characteristics (specifically address
-// space layout) as an alternative to forking the zygote.
-// A new delegate is passed in as an argument to ZygoteMain().
-class NaClForkDelegate : public ZygoteForkDelegate {
- public:
-  NaClForkDelegate();
-  virtual ~NaClForkDelegate();
-
-  virtual void Init(bool sandboxed,
-                    int browserdesc,
-                    int sandboxdesc) OVERRIDE;
-  virtual void InitialUMA(std::string* uma_name,
-                          int* uma_sample,
-                          int* uma_boundary_value) OVERRIDE;
-  virtual bool CanHelp(const std::string& process_type, std::string* uma_name,
-                          int* uma_sample, int* uma_boundary_value) OVERRIDE;
-  virtual pid_t Fork(const std::vector<int>& fds) OVERRIDE;
-  virtual bool AckChild(int fd,
-                        const std::string& channel_switch) OVERRIDE;
-
- private:
-  // These values are reported via UMA and hence they become permanent
-  // constants.  Old values cannot be reused, only new ones added.
-  enum NaClHelperStatus {
-    kNaClHelperUnused = 0,
-    kNaClHelperMissing = 1,
-    kNaClHelperBootstrapMissing = 2,
-    kNaClHelperValgrind = 3,
-    kNaClHelperLaunchFailed = 4,
-    kNaClHelperAckFailed = 5,
-    kNaClHelperSuccess = 6,
-    kNaClHelperStatusBoundary  // Must be one greater than highest value used.
-  };
-
-  NaClHelperStatus status_;
-  bool sandboxed_;
-  int fd_;
-};
-
-#endif  // CHROME_COMMON_NACL_FORK_DELEGATE_LINUX_H_