Create RecursiveLock.

This creates a new lock reentrant lock primitive. Base specifically avoids having such a primitive. However, the Windows heap uses such a locking primitive and we need to emulate this with out own heap implementations in SyzyASAN.

BUG=
R=sebmarchand@chromium.org

Review URL: https://codereview.appspot.com/117170043

git-svn-id: http://sawbuck.googlecode.com/svn/trunk@2193 15e8cca8-e42c-11de-a347-f34a4f72eb7d
4 files changed