Updated to Chrome 45 (2454) moved from SVN to git.

core/events/PopStateEvent.idl

Index: core/events/PopStateEvent.idl
diff --git a/core/events/PopStateEvent.idl b/core/events/PopStateEvent.idl
index a1ccf169560493bb70071a865f29445541569e9e..5d051637bd6ecf0bfd3bb6dfd094b1ad3691b89f 100644
--- a/core/events/PopStateEvent.idl
+++ b/core/events/PopStateEvent.idl
@@ -24,8 +24,11 @@
  *
  */
 
+// https://html.spec.whatwg.org/multipage/browsers.html#the-popstateevent-interface
+
 [
-    EventConstructor,
+    Constructor(DOMString type, optional PopStateEventInit eventInitDict),
+    // TODO(philipj): Exposed=(Window,Worker)
 ] interface PopStateEvent : Event {
-    [InitializedByEventConstructor, Custom=Getter] readonly attribute any state;
+    [Custom=Getter] readonly attribute any state;
 };