Have Window inherit EventTarget interface

Source/core/page/Window.idl

Index: Source/core/page/Window.idl
diff --git a/Source/core/page/Window.idl b/Source/core/page/Window.idl
index 240bde7806c67b2602abd51ac335e132c188d151..d68d8b1062c3a8bb5b74516c68962f7a468d09e3 100644
--- a/Source/core/page/Window.idl
+++ b/Source/core/page/Window.idl
@@ -26,11 +26,10 @@
 
 [
     CheckSecurity,
-    EventTarget,
     CustomToV8,
     DoNotGenerateWrap,
     ImplementedAs=DOMWindow
-] interface Window {
+] interface Window : EventTarget {
     // DOM Level 0
     [Replaceable] readonly attribute Screen screen;
     [Replaceable] readonly attribute History history;
@@ -263,15 +262,6 @@
     [EnabledAtRuntime=deviceMotion] attribute EventListener ondevicemotion;
     [EnabledAtRuntime=deviceOrientation] attribute EventListener ondeviceorientation;
 
-    // EventTarget interface
-    [Custom] void addEventListener(DOMString type,
-                                  EventListener listener,
-                                  optional boolean useCapture);
-    [Custom] void removeEventListener(DOMString type,
-                                      EventListener listener,
-                                      optional boolean useCapture);
-    [RaisesException] boolean dispatchEvent(Event evt);
-
     // Additional constructors.
     attribute TransitionEventConstructor WebKitTransitionEvent;
     [CustomConstructor] attribute HTMLImageElementConstructorConstructor Image; // Usable with new operator