Revert 289526 "Fix Mac sandbox meta data access"

trunk/src/content/common/sandbox_mac.mm

Index: trunk/src/content/common/sandbox_mac.mm
===================================================================
--- trunk/src/content/common/sandbox_mac.mm	(revision 289539)
+++ trunk/src/content/common/sandbox_mac.mm	(working copy)
@@ -114,14 +114,12 @@
   // Collect a list of all parent directories.
   base::FilePath last_path = allowed_path;
   std::vector<base::FilePath> subpaths;
-
-  base::FilePath path = allowed_path;
-  do {
+  for (base::FilePath path = allowed_path;
+       path.value() != last_path.value();
+       path = path.DirName()) {
     subpaths.push_back(path);
-
     last_path = path;
-    path = path.DirName();
-  } while (path.value() != last_path.value());
+  }
 
   // Iterate through all parents and allow stat() on them explicitly.
   NSString* sandbox_command = @"(allow file-read-metadata ";