Update chromite dependency to df22fd72.

BUG=369659
TBR=vapier@chromium.org

Review URL: https://codereview.chromium.org/345133003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@278821 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -484,7 +484,7 @@ deps_os = {
     # Build tools for targeting ChromeOS.
     "src/third_party/chromite":
       Var("chromiumos_git") + "/chromite.git" +
-      "@ff441bf434f22888b09cd65daa86d9aa2982f650",
+      "@df22fd72b22d1905af6e69d23ec373b69c9c75f6",
 
     # Dependency of chromite.git.
     "src/third_party/pyelftools":