Update chromite dependency to 1ae4638a.

DEPS

 # This file is automatically processed to create .DEPS.git which is the file
 # that gclient uses under git.
 #
 # See http://code.google.com/p/chromium/wiki/UsingGit
 #
 # To test manually, run:
 #   python tools/deps2git/deps2git.py -o .DEPS.git -w <gclientdir>
 # where <gcliendir> is the absolute path to the directory containing the
 # .gclient file (the parent of "src").
 #
@@ skipping 464 matching lines @@
       "@e59913eb5a1562e23256b0527fb709be967bedc9",
 
     # Note that this is different from Android's freetype repo.
     "src/third_party/freetype2/src":
       Var("chromium_git") + "/chromium/src/third_party/freetype2.git" +
       "@d699c2994ecc178c4ed05ac2086061b2034c2178",
 
     # Build tools for Chrome OS.
     "src/third_party/chromite":
       Var("chromiumos_git") + "/chromite.git" +
-      "@22f6c5af84990b8a618b4bce803082b6f63c821d",
+      "@1ae4638a4cd3313799f2d2598c39ff0e8941aef6",
 
     # Dependency of chromite.git.
     "src/third_party/pyelftools":
       Var("chromiumos_git") + "/third_party/pyelftools.git" +
       "@bdc1d380acd88d4bfaf47265008091483b0d614e",
 
     "src/third_party/undoview":
       "/trunk/deps/third_party/undoview@119694",
 
     "src/third_party/liblouis/src":
@@ skipping 327 matching lines @@
     # migration completes (let's say Sep 1 2014).
     "name": "check_git_config",
     "pattern": ".",
     "action": [
         "python",
         "src/tools/check_git_config.py",
         "--running-as-hook",
     ],
   },
 ]