Enable the WebIDL [Exposed] annotation on an interface's members.

Source/bindings/tests/idls/TestExposedInterface.idl

+// Copyright 2014 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.
+
+[
+    Exposed=Worker&Window&ServiceWorker

[Jens Widell, 2014/07/29 18:24:29]

We typically prefer to not add additional files here unless necessary. Can this
[Exposed] and the various attributes and methods be added to TestObject.idl
without interfering with anything already there?

[Inactive, 2014/07/29 18:54:47]

Note that the new spec says this should be:
Exposed=(Worker, Window, ServiceWorker)

[Peter Beverloo, 2014/07/30 14:48:15]

I don't mind updating the syntax, but not as part of this patch :-).

[Peter Beverloo, 2014/07/30 14:48:15]

Ack. I'll split it up later, as I'd like to keep a separate file until we get
slightly further in the review, as it helps me verify the changes.

+] interface TestExposedInterface {
+    void alwaysExposedMethod();
+    [Exposed=Worker] void workerExposedMethod();
+    [Exposed=Window] void windowExposedMethod();
+
+    static void alwaysExposedStaticMethod();
+    [Exposed=Worker] static void workerExposedStaticMethod();
+    [Exposed=Window] static void windowExposedStaticMethod();
+
+    attribute long alwaysExposedAttribute;
+    [Exposed=Worker] attribute long workerExposedAttribute;
+    [Exposed=Window] attribute long windowExposedAttribute;
+
+    [Exposed=Window&ServiceWorker] void windowAndServiceWorkerExposedMethod();

[Peter Beverloo, 2014/07/29 17:40:26]

Note: We need some way to recognize that "ServiceWorker" (and "SharedWorker",
"DedicatedWorker") are part of "Worker", which is a group definition.

+};