MediaRecorder: Adding BlobEvent and connecting it in MediaRecorderHandler

Source/modules/mediarecorder/BlobEvent.cpp

+// Copyright 2015 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/mediarecorder/BlobEvent.h"
+
+#include "modules/mediarecorder/BlobEventInit.h"
+
+namespace blink {
+
+// static
+PassRefPtrWillBeRawPtr<BlobEvent> BlobEvent::create()
+{
+    return adoptRefWillBeNoop(new BlobEvent);
+}
+
+// static
+PassRefPtrWillBeRawPtr<BlobEvent> BlobEvent::create(const AtomicString& type, const BlobEventInit& initializer)
+{
+    return adoptRefWillBeNoop(new BlobEvent(type, initializer));
+}
+
+// static
+PassRefPtrWillBeRawPtr<BlobEvent> BlobEvent::create(const AtomicString& type, Blob* blob)
+{
+    return adoptRefWillBeNoop(new BlobEvent(type, blob));
+}
+
+const AtomicString& BlobEvent::interfaceName() const
+{
+    return EventNames::BlobEvent;
+}
+
+DEFINE_TRACE(BlobEvent)
+{
+    visitor->trace(m_blob);
+    Event::trace(visitor);
+}
+
+BlobEvent::BlobEvent(const AtomicString& type, const BlobEventInit& initializer)
+    : Event(type, initializer)
+{
+    if (initializer.hasBlob())
+        m_blob = initializer.blob();
+}
+
+BlobEvent::BlobEvent(const AtomicString& type, Blob* blob)
+    : Event(type, false /* canBubble */, false /* cancelable */)
+    , m_blob(blob)
+{
+}
+
+} // namespace blink