Remove Blink-WebKit-only document.createEvent strings

third_party/WebKit/Source/modules/app_banner/BeforeInstallPromptEvent.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/app_banner/BeforeInstallPromptEvent.h"
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/frame/UseCounter.h"
 #include "modules/app_banner/AppBannerCallbacks.h"
 #include "modules/app_banner/BeforeInstallPromptEventInit.h"
 #include "public/platform/modules/app_banner/WebAppBannerClient.h"
 
 namespace blink {
 
-BeforeInstallPromptEvent::BeforeInstallPromptEvent()
-{
-}
-
 BeforeInstallPromptEvent::BeforeInstallPromptEvent(const AtomicString& name, ExecutionContext* executionContext, const Vector<String>& platforms, int requestId, WebAppBannerClient* client)
     : Event(name, false, true)
     , m_platforms(platforms)
     , m_requestId(requestId)
     , m_client(client)
     , m_userChoice(new UserChoiceProperty(executionContext, this, UserChoiceProperty::UserChoice))
     , m_registered(false)
 {
     UseCounter::count(executionContext, UseCounter::BeforeInstallPromptEvent);
 }
@@ skipping 56 matching lines @@
     UseCounter::count(target()->getExecutionContext(), UseCounter::BeforeInstallPromptEventPreventDefault);
 }
 
 DEFINE_TRACE(BeforeInstallPromptEvent)
 {
     visitor->trace(m_userChoice);
     Event::trace(visitor);
 }
 
 } // namespace blink