Bug 1307282 - Remove redundant read-metadata rights from the content sandbox; r=gcp

MozReview-Commit-ID: CILCWk4nINs

--HG--
extra : rebase_source : b3d738365a978505fdbc5ba0a94de62a8824e2f2

security/sandbox/mac/Sandbox.mm

@@ -255,8 +255,6 @@ static const char contentSandboxRules[] =
   "    (allow file-read*\n"
   "           (home-regex (string-append \"/Library/Preferences/\" (regex-quote domain)))))\n"
   "\n"
-  "  (allow file-read-metadata)\n"
-  "\n"
   "  (allow ipc-posix-shm\n"
   "      (ipc-posix-name-regex \"^/tmp/com.apple.csseed:\")\n"
   "      (ipc-posix-name-regex \"^CFPBS:\")\n"