getFile in DirectoryEntry takes an Object instead of a Map for Flags

[DartBot]

This issue was originally filed by jeffbailey@google.com

---

What steps will reproduce the problem?

For this snippet of code:

void makeOptionsFile(dom.DOMFileSystem fs) {
  fs.root.getFile('NetHack.cnf', {'create': true}, (var fileEntry) {

frogc and minfrog define the flags object as:

_map(["create", true])

Which in turn gets instantiated as a LinkedHashMapImplementation();

Unfortunately, the implementation of getFile isn't wrapped here, so there's nothing to turn the map into an actual JavaScript object, as is expected by the JS runtime.

getFile then silently ignores the flags (no warnings, no errors at either compile or runtime) and behaves incorrectly.

When I sed the output to actually just have a JS object, everything works as expected.

What version of the product are you using? On what operating system?

Current Dart from today on Goobuntu

Please provide any additional information below.

[madsager]

Added Area-Frog, Triaged labels.

[kasperl]

I think this is a DOM library issue.

---

cc @rakudrama.
Removed Area-Frog label.
Added Area-UI label.

[DartBot]

This comment was originally written by jeffbailey@google.com

---

kasperl: It occurs in both the DOM and HTML library in current bleeding_edge. With the updated dart:html library, I switched my local tree to using purely the html bindings and dropped dom.

[dgrove]

Added AssumedStale label.