Expose the sandbox related code through the content API. I did a bit of cleanup while I was doing...

base/message_pump_default.cc

Index: base/message_pump_default.cc
===================================================================
--- base/message_pump_default.cc	(revision 107639)
+++ base/message_pump_default.cc	(working copy)
@@ -5,7 +5,10 @@
 #include "base/message_pump_default.h"
 
 #include "base/logging.h"
+
+#if defined(OS_MACOSX)
 #include "base/mac/scoped_nsautorelease_pool.h"
+#endif
 
 namespace base {
 
@@ -18,7 +21,9 @@
   DCHECK(keep_running_) << "Quit must have been called outside of Run!";
 
   for (;;) {
+#if defined(OS_MACOSX)
     mac::ScopedNSAutoreleasePool autorelease_pool;
+#endif
 
     bool did_work = delegate->DoWork();
     if (!keep_running_)