Have ScriptPromiseResolver on the Oilpan heap always.

Source/modules/serviceworkers/ServiceWorkerGlobalScope.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 49 matching lines @@
 #include "public/platform/Platform.h"
 #include "public/platform/WebServiceWorkerSkipWaitingCallbacks.h"
 #include "public/platform/WebURL.h"
 #include "wtf/CurrentTime.h"
 
 namespace blink {
 
 class ServiceWorkerGlobalScope::SkipWaitingCallback final : public WebServiceWorkerSkipWaitingCallbacks {
     WTF_MAKE_NONCOPYABLE(SkipWaitingCallback);
 public:
-    explicit SkipWaitingCallback(PassRefPtrWillBeRawPtr<ScriptPromiseResolver> resolver)
+    explicit SkipWaitingCallback(ScriptPromiseResolver* resolver)
         : m_resolver(resolver) { }
     ~SkipWaitingCallback() { }
 
     void onSuccess() override
     {
         m_resolver->resolve();
     }
 
 private:
-    RefPtrWillBePersistent<ScriptPromiseResolver> m_resolver;
+    Persistent<ScriptPromiseResolver> m_resolver;
 };
 
 PassRefPtrWillBeRawPtr<ServiceWorkerGlobalScope> ServiceWorkerGlobalScope::create(ServiceWorkerThread* thread, PassOwnPtr<WorkerThreadStartupData> startupData)
 {
     // Note: startupData is finalized on return. After the relevant parts has been
     // passed along to the created 'context'.
     RefPtrWillBeRawPtr<ServiceWorkerGlobalScope> context = adoptRefWillBeNoop(new ServiceWorkerGlobalScope(startupData->m_scriptURL, startupData->m_userAgent, thread, monotonicallyIncreasingTime(), startupData->m_starterOrigin, startupData->m_workerClients.release()));
 
     context->setV8CacheOptions(startupData->m_v8CacheOptions);
     context->applyContentSecurityPolicyFromVector(*startupData->m_contentSecurityPolicyHeaders);
@@ skipping 56 matching lines @@
     exceptionState.throwDOMException(InvalidAccessError, "Not supported.");
 }
 
 ScriptPromise ServiceWorkerGlobalScope::skipWaiting(ScriptState* scriptState)
 {
     ExecutionContext* executionContext = scriptState->executionContext();
     // FIXME: short-term fix, see details at: https://codereview.chromium.org/535193002/.
     if (!executionContext)
         return ScriptPromise();
 
-    RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
+    ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
     ScriptPromise promise = resolver->promise();
 
     ServiceWorkerGlobalScopeClient::from(executionContext)->skipWaiting(new SkipWaitingCallback(resolver));
     return promise;
 }
 
 void ServiceWorkerGlobalScope::setRegistration(WebServiceWorkerRegistration* registration)
 {
     if (!executionContext()) {
         ServiceWorkerRegistration::dispose(registration);
@@ skipping 76 matching lines @@
 }
 
 void ServiceWorkerGlobalScope::scriptLoaded(size_t scriptSize, size_t cachedMetadataSize)
 {
     ++m_scriptCount;
     m_scriptTotalSize += scriptSize;
     m_scriptCachedMetadataTotalSize += cachedMetadataSize;
 }
 
 } // namespace blink