[Aura] Added Support for rendering software compositor frames as cc::TextureLayers.

base/memory/shared_memory_posix.cc

 // 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.
 
 #include "base/memory/shared_memory.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
@@ skipping 81 matching lines @@
   return SharedMemoryHandle();
 }
 
 // static
 void SharedMemory::CloseHandle(const SharedMemoryHandle& handle) {
   DCHECK_GE(handle.fd, 0);
   if (HANDLE_EINTR(close(handle.fd)) < 0)
     DPLOG(ERROR) << "close";
 }
 
+//static
+SharedMemoryHandle SharedMemory::DuplicateHandle(
+    const SharedMemoryHandle& handle) {
+  SharedMemoryHandle result;
+  result.fd = dup(handle.fd);

[piman, 2013/06/05 00:30:55]

nit: HANDLE_EINTR

[slavi, 2013/06/06 23:02:47]

Done.

+  result.auto_close = false;

[piman, 2013/06/05 00:30:55]

nit: make that true
It doesn't have an effect in most of the cases, except when you send it through
IPC, but in those cases you most likely want it true.

[slavi, 2013/06/06 23:02:47]

Done.

+  return result;
+}
+
 // static
 size_t SharedMemory::GetHandleLimit() {
   return base::GetMaxFds();
 }
 
 bool SharedMemory::CreateAndMapAnonymous(size_t size) {
   return CreateAnonymous(size) && Map(size);
 }
 
 #if !defined(OS_ANDROID)
@@ skipping 267 matching lines @@
   new_handle->fd = new_fd;
   new_handle->auto_close = true;
 
   if (close_self)
     Close();
 
   return true;
 }
 
 }  // namespace base