diff -r 000000000000 -r 6474c204b198 js/src/assembler/moco/MocoStubs.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/assembler/moco/MocoStubs.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,38 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * 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 assembler_moco_MocoStubs_h
+#define assembler_moco_MocoStubs_h
+
+namespace JSC {
+
+class JITCode {
+public:
+  JITCode(void* start, size_t size)
+    : m_start(start), m_size(size)
+  { }
+  JITCode() { }
+  void*  start() const { return m_start; }
+  size_t size() const { return m_size; }
+private:
+  void*  m_start;
+  size_t m_size;
+};
+
+class CodeBlock {
+public:
+  CodeBlock(JITCode& jc)
+    : m_jitcode(jc)
+  {
+  }
+  JITCode& getJITCode() { return m_jitcode; }
+private:
+  JITCode& m_jitcode;
+};
+
+} // namespace JSC
+
+#endif /* assembler_moco_MocoStubs_h */