IDL: various adjustments to match Web IDL specification better

tools/idl_parser/test_parser/interface_web.idl

 /* Copyright (c) 2013 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. */
 
 /* Test Interface productions
 
 Run with --test to generate an AST and verify that all comments accurately
 reflect the state of the Nodes.
 
 BUILD Type(Name)
@@ skipping 212 matching lines @@
  *      Promise(Promise)
  *        Type()
  *          Any()
  */
 interface MyIfacePromise {
   Promise<void> method1();
   Promise<long> method2();
   Promise<any> method3();
   Promise method4();
 };
+
+/* TREE
+ *Interface(MyIfaceIterable)
+ *  Iterable()
+ *    Type()
+ *      PrimitiveType(long)
+ *  Iterable()
+ *    Type()
+ *      PrimitiveType(double)
+ *    Type()
+ *      PrimitiveType(DOMString)
+ *  LegacyIterable()
+ *    Type()
+ *      PrimitiveType(boolean)
+ */
+interface MyIfaceIterable {
+  iterable<long>;
+  iterable<double, DOMString>;
+  legacyiterable<boolean>;
+};
+
+/* TREE
+ *Interface(MyIfaceMaplike)
+ *  Maplike()
+ *    Type()
+ *      PrimitiveType(long)
+ *    Type()
+ *      PrimitiveType(DOMString)
+ *  Maplike()
+ *    Type()
+ *      PrimitiveType(double)
+ *    Type()
+ *      PrimitiveType(boolean)
+ */
+interface MyIfaceMaplike {
+  readonly maplike<long, DOMString>;
+  maplike<double, boolean>;
+};
+
+/* TREE
+ *Interface(MyIfaceSetlike)
+ *  Setlike()
+ *    Type()
+ *      PrimitiveType(long)
+ *  Setlike()
+ *    Type()
+ *      PrimitiveType(double)
+ */
+interface MyIfaceSetlike {
+  readonly setlike<long>;
+  setlike<double>;
+};