gen_snapshot now generates two snapshot buffers, one for the vm isolate

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 19 matching lines @@
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
   'angle_revision': 'bdd419f9f5b006e913606e7363125942c8ae06bc',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling build tools
   # and whatever else without interference from each other.
   'buildtools_revision': '3b302fef93f7cc58d9b8168466905237484b2772',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Dart
   # and whatever else without interference from each other.
-  'dart_revision': '44685',
+  'dart_revision': '44854',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.
   'pdfium_revision': 'b0115665b0f33971f1b7077740d51e155583cec0',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.
   'boringssl_revision': '642f1498d056dbba3e50ed5a232ab2f482626dec',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling lss
@@ skipping 274 matching lines @@
     # corresponding .py files have already been deleted.
     'name': 'remove_stale_pyc_files',
     'pattern': 'src/tools/.*\\.py',
     'action': [
         'python',
         'src/tools/remove_stale_pyc_files.py',
         'src/tools',
     ],
   },
 ]