Implement InitSegmentReceived algorithm in blink

third_party/WebKit/Source/modules/mediasource/TrackDefault.h

 // 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.
 
 #ifndef TrackDefault_h
 #define TrackDefault_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ExceptionState;
 
 class TrackDefault final : public GarbageCollectedFinalized<TrackDefault>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
+    static const AtomicString& audioKeyword();
+    static const AtomicString& videoKeyword();
+    static const AtomicString& textKeyword();
+
     static TrackDefault* create(const AtomicString& type, const String& language, const String& label, const Vector<String>& kinds, const String& byteStreamTrackID, ExceptionState&);
 
     virtual ~TrackDefault();
 
     // Implement the IDL
     AtomicString type() const { return m_type; }
     String byteStreamTrackID() const { return m_byteStreamTrackID; }
     String language() const { return m_language; }
     String label() const { return m_label; }
     const Vector<String>& kinds() const { return m_kinds; }
 
     DEFINE_INLINE_TRACE() { }
 
 private:
     TrackDefault(const AtomicString& type, const String& language, const String& label, const Vector<String>& kinds, const String& byteStreamTrackID);
 
     const AtomicString m_type;
     const String m_byteStreamTrackID;
     const String m_language;
     const String m_label;
     const Vector<String> m_kinds;
 };
 
 } // namespace blink
 
 #endif // TrackDefault_h