Roll src/third_party/dart 967673c005..afac6a3714 (2 commits)

dart-lang/sdk@afac6a3714 Re-land "[vm] Use ELF loader in dart2native."
dart-lang/sdk@6e1b479285 [SDK] Adds text wrapping and tweaks to flags for dart2native.

DEPS

@@ -34,7 +34,7 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/master/DEPS.
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': '967673c005e12a4f5ebc84badd030883ce1369e4',
+  'dart_revision': 'afac6a371490ce93ad1654ab7ae6ce3da33ac4d0',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py

ci/licenses_golden/licenses_third_party

-Signature: a6659a8fcd5d8fa3315977fc5df12a75
+Signature: 597ea7e639af42d301f4fcdab206cd16
 
 UNUSED LICENSES: