fuse List and js Array together and a few other misc fixes.

lib/runtime/dart/collection.js

Index: lib/runtime/dart/collection.js
diff --git a/lib/runtime/dart/collection.js b/lib/runtime/dart/collection.js
index 32ff6c0c14a27ea408469587433d02aadced0670..71fd8e7b05b56a0b56358dbfb2bd5b46cc064764 100644
--- a/lib/runtime/dart/collection.js
+++ b/lib/runtime/dart/collection.js
@@ -1801,7 +1801,7 @@ var collection;
       get [core.$reversed]() {
         return new (_internal.ReversedListIterable$(E))(this);
       }
-      toString() {
+      [core.$toString]() {
         return IterableBase.iterableToFullString(this, '[', ']');
       }
     }