diff -r 000000000000 -r 6474c204b198 ipc/glue/SharedMemoryBasic_chromium.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/glue/SharedMemoryBasic_chromium.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=8 et :
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_ipc_SharedMemoryBasic_chromium_h
+#define mozilla_ipc_SharedMemoryBasic_chromium_h
+
+#include "base/shared_memory.h"
+#include "SharedMemory.h"
+
+#include "nsDebug.h"
+
+//
+// This is a low-level wrapper around platform shared memory.  Don't
+// use it directly; use Shmem allocated through IPDL interfaces.
+//
+
+namespace mozilla {
+namespace ipc {
+
+class SharedMemoryBasic : public SharedMemory
+{
+public:
+  typedef base::SharedMemoryHandle Handle;
+
+  SharedMemoryBasic()
+  {
+  }
+
+  SharedMemoryBasic(const Handle& aHandle)
+    : mSharedMemory(aHandle, false)
+  {
+  }
+
+  virtual bool Create(size_t aNbytes) MOZ_OVERRIDE
+  {
+    bool ok = mSharedMemory.Create("", false, false, aNbytes);
+    if (ok) {
+      Created(aNbytes);
+    }
+    return ok;
+  }
+
+  virtual bool Map(size_t nBytes) MOZ_OVERRIDE
+  {
+    bool ok = mSharedMemory.Map(nBytes);
+    if (ok) {
+      Mapped(nBytes);
+    }
+    return ok;
+  }
+
+  virtual void* memory() const MOZ_OVERRIDE
+  {
+    return mSharedMemory.memory();
+  }
+
+  virtual SharedMemoryType Type() const MOZ_OVERRIDE
+  {
+    return TYPE_BASIC;
+  }
+
+  static Handle NULLHandle()
+  {
+    return base::SharedMemory::NULLHandle();
+  }
+
+  static bool IsHandleValid(const Handle &aHandle)
+  {
+    return base::SharedMemory::IsHandleValid(aHandle);
+  }
+
+  bool ShareToProcess(base::ProcessHandle process,
+                      Handle* new_handle)
+  {
+    base::SharedMemoryHandle handle;
+    bool ret = mSharedMemory.ShareToProcess(process, &handle);
+    if (ret)
+      *new_handle = handle;
+    return ret;
+  }
+
+private:
+  base::SharedMemory mSharedMemory;
+};
+
+} // namespace ipc
+} // namespace mozilla
+
+
+#endif // ifndef mozilla_ipc_SharedMemoryBasic_chromium_h