Drop document.createEvent support for things still behind a flag

third_party/WebKit/Source/modules/serviceworkers/InstallEvent.cpp

Index: third_party/WebKit/Source/modules/serviceworkers/InstallEvent.cpp
diff --git a/third_party/WebKit/Source/modules/serviceworkers/InstallEvent.cpp b/third_party/WebKit/Source/modules/serviceworkers/InstallEvent.cpp
index 7c98811bdadf629305c66c149139346190712261..30f6d7a39edea1d140c6f5e1253e31f0c4355cbe 100644
--- a/third_party/WebKit/Source/modules/serviceworkers/InstallEvent.cpp
+++ b/third_party/WebKit/Source/modules/serviceworkers/InstallEvent.cpp
@@ -10,11 +10,6 @@
 
 namespace blink {
 
-InstallEvent* InstallEvent::create()
-{
-    return new InstallEvent();
-}
-
 InstallEvent* InstallEvent::create(const AtomicString& type, const ExtendableEventInit& eventInit)
 {
     return new InstallEvent(type, eventInit);
@@ -95,10 +90,6 @@ const AtomicString& InstallEvent::interfaceName() const
     return EventNames::InstallEvent;
 }
 
-InstallEvent::InstallEvent()
-{
-}
-
 InstallEvent::InstallEvent(const AtomicString& type, const ExtendableEventInit& initializer)
     : ExtendableEvent(type, initializer)
 {