Reland: Remove "needkey" event and add its replacement, "encrypted".

Source/modules/encryptedmedia/MediaKeyNeededEvent.h

Index: Source/modules/encryptedmedia/MediaKeyNeededEvent.h
diff --git a/Source/modules/encryptedmedia/MediaKeyNeededEvent.h b/Source/modules/encryptedmedia/MediaKeyNeededEvent.h
deleted file mode 100644
index a7b03b9fd3993e7d2c0fcd0b4b1de51e109a023f..0000000000000000000000000000000000000000
--- a/Source/modules/encryptedmedia/MediaKeyNeededEvent.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2012 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:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 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.
- */
-
-#ifndef MediaKeyNeededEvent_h
-#define MediaKeyNeededEvent_h
-
-#include "core/html/MediaKeyError.h"
-#include "modules/EventModules.h"
-
-namespace blink {
-
-struct MediaKeyNeededEventInit : public EventInit {
-    MediaKeyNeededEventInit();
-
-    String contentType;
-    RefPtr<Uint8Array> initData;
-};
-
-class MediaKeyNeededEvent final : public Event {
-    DEFINE_WRAPPERTYPEINFO();
-public:
-    virtual ~MediaKeyNeededEvent();
-
-    static PassRefPtrWillBeRawPtr<MediaKeyNeededEvent> create()
-    {
-        return adoptRefWillBeNoop(new MediaKeyNeededEvent);
-    }
-
-    static PassRefPtrWillBeRawPtr<MediaKeyNeededEvent> create(const AtomicString& type, const MediaKeyNeededEventInit& initializer)
-    {
-        return adoptRefWillBeNoop(new MediaKeyNeededEvent(type, initializer));
-    }
-
-    virtual const AtomicString& interfaceName() const override;
-
-    String contentType() const { return m_contentType; }
-    Uint8Array* initData() const { return m_initData.get(); }
-
-    virtual void trace(Visitor*) override;
-
-private:
-    MediaKeyNeededEvent();
-    MediaKeyNeededEvent(const AtomicString& type, const MediaKeyNeededEventInit& initializer);
-
-    String m_contentType;
-    RefPtr<Uint8Array> m_initData;
-};
-
-} // namespace blink
-
-#endif // MediaKeyNeededEvent_h