bindings: Make some value iterator properties aliases to Array.prototype functions

third_party/WebKit/Source/bindings/tests/idls/modules/TestInterface5.idl

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 48 matching lines @@
     void voidMethodTestInterfaceEmptyArg(TestInterfaceEmpty testInterfaceEmptyArg);
     void voidMethodDoubleArgFloatArg(double doubleArg, float floatArg);
     void voidMethodUnrestrictedDoubleArgUnrestrictedFloatArg(unrestricted double unrestrictedDoubleArg, unrestricted float unrestrictedFloatArg);
     [PerWorldBindings] void voidMethod();
 
     // Anonymous indexed property operations
     getter DOMString (unsigned long index);
     setter DOMString (unsigned long index, DOMString value);
     deleter boolean (unsigned long index);
 
+    // iterable<V> needs a "length" property accompanying the indexed property
+    // operations above.
+    readonly attribute unsigned long length;
+
     // Anonymous named property operations
     getter DOMString (DOMString name);
     setter DOMString (DOMString name, DOMString value);
     deleter boolean (DOMString name);
 
     [NotEnumerable] stringifier;
 
     // Per-method [Exposed] annotation support.
     void alwaysExposedMethod();
     [Exposed=Worker] void workerExposedMethod();
@@ skipping 12 matching lines @@
     // Union types
     void voidMethodBooleanOrDOMStringArg((boolean or DOMString) arg);
     void voidMethodDoubleOrDOMStringArg((double or DOMString) arg);
 
     // Callback functions
     void voidMethodVoidExperimentalCallbackFunction(VoidExperimentalCallbackFunction arg);
     void voidMethodVoidCallbackFunctionModulesArg(VoidCallbackFunctionModules arg);
 
     iterable<any>;
 };