Roll Dart forward.

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').
 #
 # Then commit .DEPS.git locally (gclient doesn't like dirty trees) and run
 #   gclient sync
 # Verify the thing happened you wanted. Then revert your .DEPS.git change
 # DO NOT CHECK IN CHANGES TO .DEPS.git upstream. It will be automatically
 # updated by a bot when you modify this one.
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 
 vars = {
   'chromium_git': 'https://chromium.googlesource.com',
   'skia_revision': '87ed6be0e4ea8b0a88915045f697d0fd734ed6f5',
   'v8_revision': '3f036fc0ba4ca4483fe77822f8605c277d37ee24',
   'angle_revision': 'bdd419f9f5b006e913606e7363125942c8ae06bc',
   'buildtools_revision': 'ef7f1f539cff0441c4401d8c052e54cfd01bff07',
-  'dart_revision': 'eab11aaac5add1b4146cfef32ac4f15054b352b4',
+  'dart_revision': 'ad0e9622e9211c9593f5e51789fa6ff3c9c43e3a',
   'dart_root_certificates_revision': 'c3a41df63afacec62fcb8135196177e35fe72f71',
   'dart_observatory_packages_revision': '5c199c5954146747f75ed127871207718dc87786',
   'pdfium_revision': 'ae4256f45df69bbfdf722a6ec17e1e851911ae4e',
   'boringssl_revision': '642f1498d056dbba3e50ed5a232ab2f482626dec',
   'lss_revision': '6f97298fe3794e92c8c896a6bc06e0b36e4c3de3',
   'nss_revision': 'bb4e75a43d007518ae7d618665ea2f25b0c60b63',
   'nacl_revision': 'f3dcedcdb5cf72890166b9618005331bd2666e84',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.
@@ skipping 358 matching lines @@
     'action': [ 'src/tools/download_from_google_storage.py',
                 '--no_resume',
                 '--quiet',
                 '--platform=linux*',
                 '--no_auth',
                 '--bucket', 'mojo/mojom_parser/linux64',
                 '-s', 'src/mojo/public/tools/bindings/mojom_parser/bin/linux64/mojom_parser.sha1',
     ],
   },
 ]