Make ScriptPromiseResolver RefCountedWillBeRefCountedGarbageCollected.

Source/modules/encryptedmedia/MediaKeySystemAccess.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 "modules/encryptedmedia/MediaKeySystemAccess.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/DOMException.h"
@@ skipping 18 matching lines @@
 private:
     MediaKeysInitializer(blink::ScriptState*, const String& keySystem);
     void timerFired(blink::Timer<MediaKeysInitializer>*);
 
     const String m_keySystem;
     blink::Timer<MediaKeysInitializer> m_timer;
 };
 
 blink::ScriptPromise MediaKeysInitializer::create(blink::ScriptState* scriptState, const String& keySystem)
 {
-    RefPtr<MediaKeysInitializer> initializer = adoptRef(new MediaKeysInitializer(scriptState, keySystem));
+    RefPtrWillBeRawPtr<MediaKeysInitializer> initializer = adoptRefWillBeNoop(new MediaKeysInitializer(scriptState, keySystem));
     initializer->suspendIfNeeded();
     initializer->keepAliveWhilePending();
     return initializer->promise();
 }
 
 MediaKeysInitializer::MediaKeysInitializer(blink::ScriptState* scriptState, const String& keySystem)
     : blink::ScriptPromiseResolver(scriptState)
     , m_keySystem(keySystem)
     , m_timer(this, &MediaKeysInitializer::timerFired)
 {
@@ skipping 62 matching lines @@
     // 2. Asynchronously create and initialize the MediaKeys object.
     // 3. Return promise.
     return MediaKeysInitializer::create(scriptState, m_keySystem);
 }
 
 void MediaKeySystemAccess::trace(Visitor*)
 {
 }
 
 } // namespace blink