Tests for bug 11053 - XMLHttpRequest should be an EventTarget.

fooListener: this = [object XMLHttpRequest]
onload: this = [object XMLHttpRequest]
eventListener: this = [object XMLHttpRequest]
eventListener2: this = [object XMLHttpRequest]
onload: this = [object XMLHttpRequest]
eventListener: this = [object XMLHttpRequest]
eventListener2: this = [object XMLHttpRequest]