Have ScriptPromiseResolver on the Oilpan heap always.

Source/web/NotificationPermissionClientImpl.cpp

 // Copyright 2014 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 "config.h"
 #include "web/NotificationPermissionClientImpl.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "modules/notifications/Notification.h"
 #include "modules/notifications/NotificationPermissionCallback.h"
 #include "public/web/WebFrameClient.h"
 #include "public/web/modules/notifications/WebNotificationPermissionCallback.h"
 #include "web/WebLocalFrameImpl.h"
 
 namespace blink {
 
 namespace {
 
 class WebNotificationPermissionCallbackImpl : public WebNotificationPermissionCallback {
 public:
-    WebNotificationPermissionCallbackImpl(PassRefPtrWillBeRawPtr<ScriptPromiseResolver> resolver, NotificationPermissionCallback* deprecatedCallback)
+    WebNotificationPermissionCallbackImpl(ScriptPromiseResolver* resolver, NotificationPermissionCallback* deprecatedCallback)
         : m_resolver(resolver)
         , m_deprecatedCallback(deprecatedCallback)
     {
     }
 
     ~WebNotificationPermissionCallbackImpl() override { }
 
     void permissionRequestComplete(WebNotificationPermission permission) override
     {
         String permissionString = Notification::permissionString(permission);
         if (m_deprecatedCallback)
             m_deprecatedCallback->handleEvent(permissionString);
 
         m_resolver->resolve(permissionString);
     }
 
 private:
-    RefPtrWillBePersistent<ScriptPromiseResolver> m_resolver;
+    Persistent<ScriptPromiseResolver> m_resolver;
     Persistent<NotificationPermissionCallback> m_deprecatedCallback;
 };
 
 } // namespace
 
 PassOwnPtrWillBeRawPtr<NotificationPermissionClientImpl> NotificationPermissionClientImpl::create()
 {
     return adoptPtrWillBeNoop(new NotificationPermissionClientImpl());
 }
 
 NotificationPermissionClientImpl::NotificationPermissionClientImpl()
 {
 }
 
 NotificationPermissionClientImpl::~NotificationPermissionClientImpl()
 {
 }
 
 ScriptPromise NotificationPermissionClientImpl::requestPermission(ScriptState* scriptState, NotificationPermissionCallback* deprecatedCallback)
 {
     ASSERT(scriptState);
 
     ExecutionContext* context = scriptState->executionContext();
     ASSERT(context && context->isDocument());
 
     Document* document = toDocument(context);
     WebLocalFrameImpl* webFrame = WebLocalFrameImpl::fromFrame(document->frame());
 
-    RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
+    ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
     ScriptPromise promise = resolver->promise();
 
     webFrame->client()->requestNotificationPermission(WebSecurityOrigin(context->securityOrigin()), new WebNotificationPermissionCallbackImpl(resolver, deprecatedCallback));
 
     return promise;
 }
 
 } // namespace blink