Have ScriptPromiseResolver on the Oilpan heap always.

Source/web/StorageQuotaClientImpl.cpp

 /*
  * Copyright (C) 2014 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 57 matching lines @@
         StorageQuotaCallbacks* callbacks = DeprecatedStorageQuotaCallbacksImpl::create(successCallback, errorCallback);
         webFrame->client()->requestStorageQuota(webFrame, storageType, newQuotaInBytes, callbacks);
     } else {
         // Requesting quota in Worker is not supported.
         executionContext->postTask(FROM_HERE, StorageErrorCallback::CallbackTask::create(errorCallback, NotSupportedError));
     }
 }
 
 ScriptPromise StorageQuotaClientImpl::requestPersistentQuota(ScriptState* scriptState, unsigned long long newQuotaInBytes)
 {
-    RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
+    ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
     ScriptPromise promise = resolver->promise();
 
     if (scriptState->executionContext()->isDocument()) {
         Document* document = toDocument(scriptState->executionContext());
         WebLocalFrameImpl* webFrame = WebLocalFrameImpl::fromFrame(document->frame());
         StorageQuotaCallbacks* callbacks = StorageQuotaCallbacksImpl::create(resolver);
         webFrame->client()->requestStorageQuota(webFrame, WebStorageQuotaTypePersistent, newQuotaInBytes, callbacks);
     } else {
         // Requesting quota in Worker is not supported.
         resolver->reject(DOMError::create(NotSupportedError));
     }
 
     return promise;
 }
 
 } // namespace blink