Fix #include order from r1268.

R=ted.mielczarek@gmail.com

Review URL: https://breakpad.appspot.com/1044002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1269 4c0a9323-5329-0410-9bdc-e9ce6186880e
Don't do work inside assert(). Ever.

The Mac crash key manipulation code was intended to be thread-safe through the
provision of a mutex. The mutex operations were done inside an assert().
assert() is a no-op in NDEBUG (release) builds. Therefore, in release builds,
these operations were occurring without being protected by any mutex at all,
and were nowhere near thread-safe.

BUG=chromium:331268
R=rsesek@chromium.org

Review URL: https://breakpad.appspot.com/1034002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1270 4c0a9323-5329-0410-9bdc-e9ce6186880e