Refactoring: Make IPC::Channel::TakeClientFileDescriptor() a ScopedFD.

components/nacl/loader/nacl_ipc_adapter.h

 // 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 CHROME_NACL_NACL_IPC_ADAPTER_H_
 #define CHROME_NACL_NACL_IPC_ADAPTER_H_
 
 #include <map>
 #include <queue>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
+#include "base/files/scoped_file.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/shared_memory.h"
 #include "base/pickle.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "base/task_runner.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_platform_file.h"
@@ skipping 74 matching lines @@
   int BlockingReceive(NaClImcTypedMsgHdr* msg);
 
   // Closes the IPC channel.
   void CloseChannel();
 
   // Make a NaClDesc that refers to this NaClIPCAdapter. Note that the returned
   // NaClDesc is reference-counted, and a reference is returned.
   NaClDesc* MakeNaClDesc();
 
 #if defined(OS_POSIX)
-  int TakeClientFileDescriptor();
+  base::ScopedFD TakeClientFileDescriptor();
 #endif
 
   // Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) override;
   virtual void OnChannelConnected(int32 peer_pid) override;
   virtual void OnChannelError() override;
 
   typedef base::Callback<void(IPC::PlatformFileForTransit, base::FilePath)>
       ResolveFileTokenReplyCallback;
 
@@ skipping 95 matching lines @@
   // To be accessed on the I/O thread (via task runner) only.
   IOThreadData io_thread_data_;
 
   DISALLOW_COPY_AND_ASSIGN(NaClIPCAdapter);
 };
 
 // Export TranslatePepperFileReadWriteOpenFlags for testing.
 int TranslatePepperFileReadWriteOpenFlagsForTesting(int32_t pp_open_flags);
 
 #endif  // CHROME_NACL_NACL_IPC_ADAPTER_H_