Update Dart revision

DEPS

@@ -22,8 +22,12 @@ vars = {
   'mojo_sdk_revision': '711a0bcfb141b481f51ac1c9c62ec73e9b988615',
   'mojo_devtools_revision': '49879d78ce4486e10c2214a101d9b2e82794b2f4',
   'skia_revision': '0d39d37ddcfb3847795639eaef513f1112eba627',
+
+  # Note: When updating the Dart revision, ensure that all entries that are
+  # dependencies of dart are also updated
   'dart_revision': 'cab003366785773ace16b5305ac1f33c228cac54',
   'dart_observatory_packages_revision': 'cdc4b3d4c15b9c0c8e7702dff127b440afbb7485',
+  'dart_root_certificates_revision': 'c3a41df63afacec62fcb8135196177e35fe72f71',
 
   'buildtools_revision': '5215ee866bc3e8eb4a7f124212845abf4029e60b',
 }
@@ -56,6 +60,11 @@ deps = {
    '/external/github.com/dart-lang/observatory_pub_packages' + '@' +
    Var('dart_observatory_packages_revision'),
 
+  'src/dart/third_party/root_certificates':
+   Var('chromium_git') +
+   '/external/github.com/dart-lang/root_certificates' + '@' +
+   Var('dart_root_certificates_revision'),
+
   'src/mojo/public':
    Var('chromium_git') + '/external/github.com/domokit/mojo_sdk' + '@' +
    Var('mojo_sdk_revision'),