diff -r 000000000000 -r 6474c204b198 ipc/chromium/src/base/thread_local_posix.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/chromium/src/base/thread_local_posix.cc	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,36 @@
+// Copyright (c) 2006-2008 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/thread_local.h"
+
+#include <pthread.h>
+
+#include "base/logging.h"
+
+namespace base {
+
+// static
+void ThreadLocalPlatform::AllocateSlot(SlotType& slot) {
+  int error = pthread_key_create(&slot, NULL);
+  CHECK(error == 0);
+}
+
+// static
+void ThreadLocalPlatform::FreeSlot(SlotType& slot) {
+  int error = pthread_key_delete(slot);
+  DCHECK(error == 0);
+}
+
+// static
+void* ThreadLocalPlatform::GetValueFromSlot(SlotType& slot) {
+  return pthread_getspecific(slot);
+}
+
+// static
+void ThreadLocalPlatform::SetValueInSlot(SlotType& slot, void* value) {
+  int error = pthread_setspecific(slot, value);
+  CHECK(error == 0);
+}
+
+}  // namespace base