Have ScriptPromiseResolver on the Oilpan heap always.

Source/modules/crypto/CryptoResultImpl.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 46 matching lines @@
     if (!resolver->executionContext() || resolver->executionContext()->activeDOMObjectsAreStopped())
         return;
 
     ScriptState::Scope scope(resolver->scriptState());
     v8::Isolate* isolate = resolver->scriptState()->isolate();
     resolver->reject(v8::Exception::TypeError(v8String(isolate, errorDetails)));
 }
 
 class CryptoResultImpl::Resolver final : public ScriptPromiseResolver {
 public:
-    static PassRefPtrWillBeRawPtr<Resolver> create(ScriptState* scriptState, CryptoResultImpl* result)
+    static Resolver* create(ScriptState* scriptState, CryptoResultImpl* result)
     {
-        RefPtrWillBeRawPtr<Resolver> resolver = adoptRefWillBeNoop(new Resolver(scriptState, result));
+        ASSERT(scriptState->contextIsValid());
+        Resolver* resolver = new Resolver(scriptState, result);
         resolver->suspendIfNeeded();
         resolver->keepAliveWhilePending();
-        return resolver.release();
+        return resolver;
     }
 
     void stop() override
     {
         m_result->cancel();
         m_result = nullptr;
         ScriptPromiseResolver::stop();
     }
 
     DEFINE_INLINE_VIRTUAL_TRACE()
     {
         visitor->trace(m_result);
         ScriptPromiseResolver::trace(visitor);
     }
 
 private:
     Resolver(ScriptState* scriptState, CryptoResultImpl* result)
         : ScriptPromiseResolver(scriptState)
         , m_result(result) { }
 
-    RefPtrWillBeMember<CryptoResultImpl> m_result;
+    Member<CryptoResultImpl> m_result;
 };
 
 CryptoResultImpl::ResultCancel::ResultCancel()
     : m_cancelled(0)
 {
 }
 
 bool CryptoResultImpl::ResultCancel::cancelled() const
 {
     return acquireLoad(&m_cancelled);
@@ skipping 19 matching lines @@
         return OperationError;
     case WebCryptoErrorTypeType:
         return V8TypeError;
     }
 
     ASSERT_NOT_REACHED();
     return 0;
 }
 
 CryptoResultImpl::CryptoResultImpl(ScriptState* scriptState)
-    : m_cancel(ResultCancel::create())
+    : m_resolver(Resolver::create(scriptState, this))
+    , m_cancel(ResultCancel::create())
 {
-    ASSERT(scriptState->contextIsValid());
-    if (scriptState->executionContext()->activeDOMObjectsAreStopped()) {
-        // If active dom objects have been stopped, avoid creating
-        // CryptoResultImpl::Resolver.
-        m_resolver = nullptr;
+    // Sync cancellation state.
+    if (scriptState->executionContext()->activeDOMObjectsAreStopped())
         m_cancel->cancel();
-        return;
-    }
-    m_resolver = Resolver::create(scriptState, this).get();
 }
 
 CryptoResultImpl::~CryptoResultImpl()
 {
     ASSERT(!m_resolver);
 }
 
 DEFINE_TRACE(CryptoResultImpl)
 {
     visitor->trace(m_resolver);
     CryptoResult::trace(visitor);
 }
 
 void CryptoResultImpl::clearResolver()
 {
     m_resolver = nullptr;
 }
 
-PassRefPtrWillBeRawPtr<CryptoResultImpl> CryptoResultImpl::create(ScriptState* scriptState)
+CryptoResultImpl* CryptoResultImpl::create(ScriptState* scriptState)
 {
-    return adoptRefWillBeNoop(new CryptoResultImpl(scriptState));
+    return new CryptoResultImpl(scriptState);
 }
 
 void CryptoResultImpl::completeWithError(WebCryptoErrorType errorType, const WebString& errorDetails)
 {
     if (!m_resolver)
         return;
 
     ExceptionCode ec = webCryptoErrorToExceptionCode(errorType);
 
     // Handle TypeError separately, as it cannot be created using
@@ skipping 75 matching lines @@
     m_cancel.clear();
     clearResolver();
 }
 
 ScriptPromise CryptoResultImpl::promise()
 {
     return m_resolver ? m_resolver->promise() : ScriptPromise();
 }
 
 } // namespace blink