InstalledAppController should use ContextLifecycleObserver instead of DOMWindowProperty

third_party/WebKit/Source/modules/installedapp/InstalledAppController.cpp

 // Copyright 2016 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/installedapp/InstalledAppController.h"
 
+#include "core/dom/Document.h"
 #include "core/frame/LocalFrame.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "public/platform/WebSecurityOrigin.h"
 
 #include <utility>
 
 namespace blink {
 
 InstalledAppController::~InstalledAppController() {}
 
 void InstalledAppController::provideTo(LocalFrame& frame,
                                        WebInstalledAppClient* client) {
   ASSERT(RuntimeEnabledFeatures::installedAppEnabled());
 
   InstalledAppController* controller =
       new InstalledAppController(frame, client);
   Supplement<LocalFrame>::provideTo(frame, supplementName(), controller);
 }
 
 InstalledAppController* InstalledAppController::from(LocalFrame& frame) {
   InstalledAppController* controller = static_cast<InstalledAppController*>(
       Supplement<LocalFrame>::from(frame, supplementName()));
   ASSERT(controller);
   return controller;
 }
 
 InstalledAppController::InstalledAppController(LocalFrame& frame,
                                                WebInstalledAppClient* client)
-    : DOMWindowProperty(&frame), m_client(client) {}
+    : ContextLifecycleObserver(frame.document()), m_client(client) {}
 
 const char* InstalledAppController::supplementName() {
   return "InstalledAppController";
 }
 
 void InstalledAppController::getInstalledApps(
     const WebSecurityOrigin& url,
     std::unique_ptr<AppInstalledCallbacks> callback) {
   // When detached, the client is no longer valid.
   if (!m_client) {
     callback.release()->onError();
     return;
   }
 
   // Client is expected to take ownership of the callback
   m_client->getInstalledRelatedApps(url, std::move(callback));
 }
 
-void InstalledAppController::frameDestroyed() {
+void InstalledAppController::contextDestroyed() {
   m_client = nullptr;
-  DOMWindowProperty::frameDestroyed();
 }
 
 DEFINE_TRACE(InstalledAppController) {
   Supplement<LocalFrame>::trace(visitor);
-  DOMWindowProperty::trace(visitor);
+  ContextLifecycleObserver::trace(visitor);
 }
 
 }  // namespace blink