[bindings] Remove History.(push|replace)State custom bindings

Source/core/frame/History.idl

Index: Source/core/frame/History.idl
diff --git a/Source/core/frame/History.idl b/Source/core/frame/History.idl
index c485dc830e9a4b25bb1fbee629e8a146876e78ff..61d7d5ca7f02fa3fc9720e02f34e971508e1ce11 100644
--- a/Source/core/frame/History.idl
+++ b/Source/core/frame/History.idl
@@ -34,6 +34,6 @@
     [CallWith=ExecutionContext] void go([Default=Undefined] optional long distance);
 
     // FIXME: the title arguments below should simply be 'DOMString title'.
-    [Custom=CallEpilogue, RaisesException] void pushState(SerializedScriptValue data, [TreatUndefinedAs=NullString] DOMString? title, optional DOMString? url = null);
-    [Custom=CallEpilogue, RaisesException] void replaceState(SerializedScriptValue data, [TreatUndefinedAs=NullString] DOMString? title, optional DOMString? url = null);
+    [RaisesException] void pushState(SerializedScriptValue data, [TreatUndefinedAs=NullString] DOMString? title, optional DOMString? url = null);
+    [RaisesException] void replaceState(SerializedScriptValue data, [TreatUndefinedAs=NullString] DOMString? title, optional DOMString? url = null);
 };