Get rid of SharedMemory::GiveToProcess.

base/memory/shared_memory_handle.h

 // Copyright 2015 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 BASE_MEMORY_SHARED_MEMORY_HANDLE_H_
 #define BASE_MEMORY_SHARED_MEMORY_HANDLE_H_
 
 #include <stddef.h>
 
 #include "build/build_config.h"
@@ skipping 38 matching lines @@
   void Close() const;
 
   // Whether ownership of the underlying OS resource is implicitly passed to
   // the IPC subsystem during serialization.
   void SetOwnershipPassesToIPC(bool ownership_passes);
   bool OwnershipPassesToIPC() const;
 
   // Whether the underlying OS resource is valid.
   bool IsValid() const;
 
+  // Duplicates the underlying OS resource.
+  SharedMemoryHandle Duplicate() const;
+
 #if defined(OS_MACOSX) && !defined(OS_IOS)
   enum Type {
     // The SharedMemoryHandle is backed by a POSIX fd.
     POSIX,
     // The SharedMemoryHandle is backed by the Mach primitive "memory object".
     MACH,
   };
 
   // Constructs a SharedMemoryHandle backed by the components of a
   // FileDescriptor. The newly created instance has the same ownership semantics
   // as base::FileDescriptor. This typically means that the SharedMemoryHandle
   // takes ownership of the |fd| if |auto_close| is true. Unfortunately, it's
   // common for existing code to make shallow copies of SharedMemoryHandle, and
   // the one that is finally passed into a base::SharedMemory is the one that
   // "consumes" the fd.
   explicit SharedMemoryHandle(const base::FileDescriptor& file_descriptor);
 
   // Makes a Mach-based SharedMemoryHandle of the given size. On error,
   // subsequent calls to IsValid() return false.
   explicit SharedMemoryHandle(mach_vm_size_t size);
 
   // Makes a Mach-based SharedMemoryHandle from |memory_object|, a named entry
   // in the task with process id |pid|. The memory region has size |size|.
   SharedMemoryHandle(mach_port_t memory_object,
                      mach_vm_size_t size,
                      base::ProcessId pid);
 
-  // Duplicates the underlying OS resources.
-  SharedMemoryHandle Duplicate() const;
-
   // Exposed so that the SharedMemoryHandle can be transported between
   // processes.
   mach_port_t GetMemoryObject() const;
 
   // Returns false on a failure to determine the size. On success, populates the
   // output variable |size|.
   bool GetSize(size_t* size) const;
 
   // The SharedMemoryHandle must be valid.
   // Returns whether the SharedMemoryHandle was successfully mapped into memory.
@@ skipping 25 matching lines @@
 
   // Returns the underlying OS resource.
   int GetHandle() const;
 
   // Takes ownership of the OS resource.
   void SetHandle(int fd);
 
   // Invalidates [but doesn't close] the underlying OS resource. This will leak
   // unless the caller is careful.
   int Release();
-
-  // Duplicates the underlying OS resource.
-  SharedMemoryHandle Duplicate() const;
 #endif
 
  private:
 #if defined(OS_MACOSX) && !defined(OS_IOS)
   friend class SharedMemory;
 
   // Shared code between copy constructor and operator=.
   void CopyRelevantData(const SharedMemoryHandle& handle);
 
   Type type_;
@@ skipping 35 matching lines @@
   // Defaults to |false|.
   bool ownership_passes_to_ipc_;
 #else
   FileDescriptor file_descriptor_;
 #endif
 };
 
 }  // namespace base
 
 #endif  // BASE_MEMORY_SHARED_MEMORY_HANDLE_H_