Generate all runtime files from dart.

test/codegen/expect/collection/src/canonicalized_map.js

Index: test/codegen/expect/collection/src/canonicalized_map.js
diff --git a/test/codegen/expect/collection/src/canonicalized_map.js b/test/codegen/expect/collection/src/canonicalized_map.js
index deeec99c8f503cb1b2c32d32139ceced7720e440..3e1e9ab14bfea214dd4a444f1b1d725e8bc8cd82 100644
--- a/test/codegen/expect/collection/src/canonicalized_map.js
+++ b/test/codegen/expect/collection/src/canonicalized_map.js
@@ -1,5 +1,5 @@
 dart_library.library('collection/src/canonicalized_map', null, /* Imports */[
-  "dart/_runtime",
+  'dart/_runtime',
   'dart/core',
   'collection/src/utils',
   'dart/collection'
@@ -62,7 +62,7 @@ dart_library.library('collection/src/canonicalized_map', null, /* Imports */[
         return this[_base].isNotEmpty;
       }
       get keys() {
-        return this[_base].values[dartx.map](dart.fn(pair => pair.first, K, [utils.Pair$(K, V)]));
+        return dart.as(this[_base].values[dartx.map](dart.fn(pair => pair.first, K, [utils.Pair$(K, V)])), core.Iterable$(K));
       }
       get length() {
         return this[_base].length;
@@ -78,7 +78,7 @@ dart_library.library('collection/src/canonicalized_map', null, /* Imports */[
         return pair == null ? null : pair.last;
       }
       get values() {
-        return this[_base].values[dartx.map](dart.fn(pair => pair.last, V, [utils.Pair$(K, V)]));
+        return dart.as(this[_base].values[dartx.map](dart.fn(pair => pair.last, V, [utils.Pair$(K, V)])), core.Iterable$(V));
       }
       toString() {
         return collection.Maps.mapToString(this);