Add a size parameter to SharedMemoryHandle.

base/memory/shared_memory.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 BASE_MEMORY_SHARED_MEMORY_H_
 #define BASE_MEMORY_SHARED_MEMORY_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 109 matching lines @@
   // Duplicates The underlying OS primitive. Returns an invalid handle on
   // failure. The caller is responsible for destroying the duplicated OS
   // primitive.
   static SharedMemoryHandle DuplicateHandle(const SharedMemoryHandle& handle);
 
 #if defined(OS_POSIX)
   // This method requires that the SharedMemoryHandle is backed by a POSIX fd.
   static int GetFdFromSharedMemoryHandle(const SharedMemoryHandle& handle);
 #endif
 
-#if defined(OS_POSIX) && !defined(OS_ANDROID)
-  // Gets the size of the shared memory region referred to by |handle|.
-  // Returns false on a failure to determine the size. On success, populates the
-  // output variable |size|.
-  static bool GetSizeFromSharedMemoryHandle(const SharedMemoryHandle& handle,
-                                            size_t* size);
-#endif  // defined(OS_POSIX) && !defined(OS_ANDROID)
-
   // Creates a shared memory object as described by the options struct.
   // Returns true on success and false on failure.
   bool Create(const SharedMemoryCreateOptions& options);
 
   // Creates and maps an anonymous shared memory segment of size size.
   // Returns true on success and false on failure.
   bool CreateAndMapAnonymous(size_t size);
 
   // Creates an anonymous shared memory segment of size size.
   // Returns true on success and false on failure.
@@ skipping 139 matching lines @@
   bool read_only_ = false;
   size_t requested_size_ = 0;
   SharedMemoryError last_error_ = SharedMemoryError::NO_ERRORS;
 
   DISALLOW_COPY_AND_ASSIGN(SharedMemory);
 };
 
 }  // namespace base
 
 #endif  // BASE_MEMORY_SHARED_MEMORY_H_