diff -r 000000000000 -r 6474c204b198 ipc/chromium/src/base/thread_local_storage_posix.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/chromium/src/base/thread_local_storage_posix.cc	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,44 @@
+// 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_storage.h"
+
+#include "base/logging.h"
+
+ThreadLocalStorage::Slot::Slot(TLSDestructorFunc destructor)
+    : initialized_(false) {
+  Initialize(destructor);
+}
+
+bool ThreadLocalStorage::Slot::Initialize(TLSDestructorFunc destructor) {
+  DCHECK(!initialized_);
+  int error = pthread_key_create(&key_, destructor);
+  if (error) {
+    NOTREACHED();
+    return false;
+  }
+
+  initialized_ = true;
+  return true;
+}
+
+void ThreadLocalStorage::Slot::Free() {
+  DCHECK(initialized_);
+  int error = pthread_key_delete(key_);
+  if (error)
+    NOTREACHED();
+  initialized_ = false;
+}
+
+void* ThreadLocalStorage::Slot::Get() const {
+  DCHECK(initialized_);
+  return pthread_getspecific(key_);
+}
+
+void ThreadLocalStorage::Slot::Set(void* value) {
+  DCHECK(initialized_);
+  int error = pthread_setspecific(key_, value);
+  if (error)
+    NOTREACHED();
+}