Remove MEDIA_SOURCE feature define.

Source/WebCore/Modules/mediasource/SourceBuffer.cpp

 /*
  * 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:
  *
  *     * 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 13 matching lines @@
  * 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.
  */
 
 #include "config.h"
 #include "SourceBuffer.h"
 
-#if ENABLE(MEDIA_SOURCE)
-
 #include "MediaSource.h"
 #include "SourceBufferPrivate.h"
 #include "TimeRanges.h"
 #include <wtf/Uint8Array.h>
 
 namespace WebCore {
 
 PassRefPtr<SourceBuffer> SourceBuffer::create(PassOwnPtr<SourceBufferPrivate> sourceBufferPrivate, PassRefPtr<MediaSource> source)
 {
     return adoptRef(new SourceBuffer(sourceBufferPrivate, source));
@@ skipping 124 matching lines @@
     return m_source->readyState() == MediaSource::openKeyword();
 }
 
 bool SourceBuffer::isEnded() const
 {
     ASSERT(m_source);
     return m_source->readyState() == MediaSource::endedKeyword();
 }
 
 } // namespace WebCore
-
-#endif