MediaLog: Log selected audio/video decoder name.

media/base/media_log_event.h

 // Copyright (c) 2012 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 MEDIA_BASE_MEDIA_LOG_EVENT_H_
 #define MEDIA_BASE_MEDIA_LOG_EVENT_H_
 
 #include "base/time/time.h"
 #include "base/values.h"
 
@@ skipping 71 matching lines @@
     //         "buffer_end": <last buffered byte>.
     BUFFERED_EXTENTS_CHANGED,
 
     // Errors reported by Media Source Extensions code.
     MEDIA_SOURCE_ERROR,
     // params: "error": Error string describing the error detected.
 
     // A property has changed without any special event occurring.
     PROPERTY_CHANGE,
 
-    TYPE_LAST = PROPERTY_CHANGE
+    // Any info that's worth logging.
+    INFO,
+
+    TYPE_LAST = INFO
   };
 
   int32 id;
   Type type;
   base::DictionaryValue params;
   base::TimeTicks time;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MEDIA_LOG_EVENT_H_