diff -r 000000000000 -r 6474c204b198 js/src/devtools/Instruments.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/devtools/Instruments.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,23 @@
+/* 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 devtools_Instruments_h
+#define devtools_Instruments_h
+
+#ifdef __APPLE__
+
+#include <unistd.h>
+
+namespace Instruments {
+
+bool Start(pid_t pid);
+void Pause();
+bool Resume();
+void Stop(const char* profileName);
+
+}
+
+#endif /* __APPLE__ */
+
+#endif /* devtools_Instruments_h */