Have the Performance interface inherit EventTarget

Source/bindings/tests/idls/TestObject.idl

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary formstrArg, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 19 matching lines @@
 // This IDL file is for testing the bindings code generator and for tracking
 // changes in its ouput.
 
 enum TestEnumType { "", "EnumValue1", "EnumValue2", "EnumValue3" };
 
 callback TestCallbackFunction = void (TestEnumType formal1, TestObject formal2);
 
 [
     Constructor(TestCallback testCallback),
     ImplementedAs=TestObj
-] interface TestObject {
+] interface TestObject : EventTarget {
     // Attributes
     readonly attribute long            readOnlyLongAttr;
     readonly attribute DOMString       readOnlyStringAttr;
     readonly attribute TestObject         readOnlyTestObjectAttr;
     static readonly attribute long     staticReadOnlyLongAttr;
     static attribute DOMString         staticStringAttr;
     static readonly attribute TestSubObjConstructor TestSubObj;
     attribute TestEnumType             enumAttr;
     readonly attribute TestEnumType    readOnlyEnumAttr;
     attribute byte                     byteAttr;
@@ skipping 268 matching lines @@
 
     [DeprecateAs=Method] void deprecatedMethod();
     [DeprecateAs=StaticMethod] static void deprecatedStaticMethod();
 
     [DeprecateAs=Constant] const unsigned short DEPRECATED_CONSTANT = 1;
 };
 
 // The following comment should not generate any code
 // TestObject implements TestImplements;