Refactor "track options" to be a dictionary.

third_party/WebKit/Source/modules/mediastream/MediaTrackConstraintSet.idl

Index: third_party/WebKit/Source/modules/mediastream/MediaTrackConstraintSet.idl
diff --git a/third_party/WebKit/Source/modules/mediastream/MediaTrackConstraintSet.idl b/third_party/WebKit/Source/modules/mediastream/MediaTrackConstraintSet.idl
new file mode 100644
index 0000000000000000000000000000000000000000..4438a1a48433f3dc05be076e3c66117ef7b1d741
--- /dev/null
+++ b/third_party/WebKit/Source/modules/mediastream/MediaTrackConstraintSet.idl
@@ -0,0 +1,12 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+

[Peter Beverloo, 2015/10/05 13:49:09]

micro nit: Please link to the spec:

//
https://w3c.github.io/mediacapture-main/getusermedia.html#idl-def-MediaTrackC...

[hta - Chromium, 2015/10/05 21:28:06]

Done.

+dictionary MediaTrackConstraintSet {
+  // The "mandatory" and "optional" members are retained for conformance
+  // with http://www.w3.org/TR/2013/WD-mediacapture-streams-20130903/
+  // Next line doesn't compile - crbug/524357

[Peter Beverloo, 2015/10/05 13:49:09]

What does "Next line doesn't compile" mean? Try-bots are proving you wrong :)

nit: crbug.com/524357

[hta - Chromium, 2015/10/05 21:28:06]

That I'd forgotten to remove the comment :-( (embarraassed)

+  Dictionary mandatory;
+  sequence<Dictionary> _optional;
+  DOMString foobar;

[Peter Beverloo, 2015/10/05 13:49:09]

Please remove this line.

[hta - Chromium, 2015/10/05 21:28:06]

Done.

+};