Introduce KeepAliveWhilePending to ScriptPromiseResolverWithContext.

Source/modules/webmidi/NavigatorWebMIDI.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 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "modules/webmidi/NavigatorWebMIDI.h"
 
 #include "bindings/v8/ScriptPromise.h"
 #include "bindings/v8/ScriptPromiseResolver.h"
+#include "core/dom/AsyncInitializerResolver.h"
 #include "core/dom/DOMError.h"
 #include "core/dom/Document.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Navigator.h"
 #include "modules/webmidi/MIDIAccess.h"
+#include "modules/webmidi/MIDIAccessInitializer.h"
 #include "modules/webmidi/MIDIOptions.h"
 
 namespace WebCore {
 
 NavigatorWebMIDI::NavigatorWebMIDI(LocalFrame* frame)
     : DOMWindowProperty(frame)
 {
 }
 
 NavigatorWebMIDI::~NavigatorWebMIDI()
@@ skipping 23 matching lines @@
 ScriptPromise NavigatorWebMIDI::requestMIDIAccess(ScriptState* scriptState, const Dictionary& options)
 {
     if (!frame() || frame()->document()->activeDOMObjectsAreStopped()) {
         RefPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
         ScriptPromise promise = resolver->promise();
         // FIXME: Currently this rejection does not work because the context is stopped.
         resolver->reject(DOMError::create("AbortError"));
         return promise;
     }
 
-    return MIDIAccess::request(MIDIOptions(options), scriptState);
+    return AsyncInitializerResolver<MIDIAccessInitializer>::createAndStart(scriptState, MIDIAccessInitializer::create(MIDIOptions(options)));
 }
 
 } // namespace WebCore