Make sure only the right processes can access the profile path.

chrome/common/chrome_paths_mac.mm

Index: chrome/common/chrome_paths_mac.mm
diff --git a/chrome/common/chrome_paths_mac.mm b/chrome/common/chrome_paths_mac.mm
index 9df7cd5a8a1acce5e2053b755086fdc90d064397..b9eb9119a89183d0156ded9401d9ad4b7c28ba2d 100644
--- a/chrome/common/chrome_paths_mac.mm
+++ b/chrome/common/chrome_paths_mac.mm
@@ -16,6 +16,7 @@
 #import "base/mac/scoped_nsautorelease_pool.h"
 #include "base/path_service.h"
 #include "chrome/common/chrome_constants.h"
+#include "content/public/common/content_switches.h"
 
 namespace {
 
@@ -199,4 +200,10 @@ NSBundle* OuterAppBundle() {
   return bundle;
 }
 
+bool ProcessNeedsProfileDir(const std::string& process_type) {
+  // For now we have no reason to forbid this on other MacOS as we don't
+  // have the roaming profile troubles there.
+  return true;
+}
+
 }  // namespace chrome