diff -r 000000000000 -r 6474c204b198 ipc/glue/SharedMemoryBasic_android.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/glue/SharedMemoryBasic_android.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,74 @@
+/* -*- 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_android_h
+#define mozilla_ipc_SharedMemoryBasic_android_h
+
+#include "base/file_descriptor_posix.h"
+
+#include "SharedMemory.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::FileDescriptor Handle;
+
+  SharedMemoryBasic();
+
+  SharedMemoryBasic(const Handle& aHandle);
+
+  virtual ~SharedMemoryBasic();
+
+  virtual bool Create(size_t aNbytes) MOZ_OVERRIDE;
+
+  virtual bool Map(size_t nBytes) MOZ_OVERRIDE;
+
+  virtual void* memory() const MOZ_OVERRIDE
+  {
+    return mMemory;
+  }
+
+  virtual SharedMemoryType Type() const MOZ_OVERRIDE
+  {
+    return TYPE_BASIC;
+  }
+
+  static Handle NULLHandle()
+  {
+    return Handle();
+  }
+
+  static bool IsHandleValid(const Handle &aHandle)
+  {
+    return aHandle.fd >= 0;
+  }
+
+  bool ShareToProcess(base::ProcessHandle aProcess,
+                      Handle* aNewHandle);
+
+private:
+  void Unmap();
+  void Destroy();
+
+  // The /dev/ashmem fd we allocate.
+  int mShmFd;
+  // Pointer to mapped region, null if unmapped.
+  void *mMemory;
+};
+
+} // namespace ipc
+} // namespace mozilla
+
+#endif // ifndef mozilla_ipc_SharedMemoryBasic_android_h