MediaStream should fire ended event when all tracks are ended

Source/WebCore/platform/network/chromium/SocketStreamError.h

 /*
  * Copyright (C) 2009 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 14 matching lines @@
  * 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 SocketStreamError_h
 #define SocketStreamError_h
 
 #include "SocketStreamErrorBase.h"
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefCounted.h>
 
 namespace WebCore {
 
-class SocketStreamError : public SocketStreamErrorBase {
+class SocketStreamError : public RefCounted<SocketStreamError>, public SocketStreamErrorBase {
 public:
-    SocketStreamError() { }
-    explicit SocketStreamError(int errorCode)
-            : SocketStreamErrorBase(errorCode) { }
+    static PassRefPtr<SocketStreamError> create(int errorCode, const String& errorMessage)
+    {
+        return adoptRef(new SocketStreamError(errorCode, errorMessage));
+    }
+
+private:
+    SocketStreamError(int errorCode, const String& errorMessage)
+        : SocketStreamErrorBase(errorCode, String(), errorMessage)
+    {
+    }
 };
 
 }  // namespace WebCore
 
 #endif  // SocketStreamError_h