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

content/public/common/child_process_host.h

 // 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.
 
 #ifndef CONTENT_PULIC_COMMON_CHILD_PROCESS_HOST_H_
 #define CONTENT_PULIC_COMMON_CHILD_PROCESS_HOST_H_
 
+#include "base/files/scoped_file.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_channel_proxy.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace IPC {
 class MessageFilter;
@@ skipping 73 matching lines @@
   virtual std::string CreateChannel() = 0;
 
   // Returns true iff the IPC channel is currently being opened;
   virtual bool IsChannelOpening() = 0;
 
   // Adds an IPC message filter.  A reference will be kept to the filter.
   virtual void AddFilter(IPC::MessageFilter* filter) = 0;
 
 #if defined(OS_POSIX)
   // See IPC::Channel::TakeClientFileDescriptor.
-  virtual int TakeClientFileDescriptor() = 0;
+  virtual base::ScopedFD TakeClientFileDescriptor() = 0;
 #endif
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PULIC_COMMON_CHILD_PROCESS_HOST_H_