media/track: Replace wtf/Assertions.h macros in favor of base/logging.h macros

third_party/WebKit/Source/core/html/track/vtt/BufferedLineReader.cpp

 /*
  * Copyright (C) 2013, Opera Software ASA. 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 78 matching lines @@
         // set already, we want to return a line nonetheless.)
         shouldReturnLine |= !m_lineBuffer.isEmpty();
     }
 
     if (shouldReturnLine) {
         line = m_lineBuffer.toString();
         m_lineBuffer.clear();
         return true;
     }
 
-    ASSERT(m_buffer.isEmpty());
+    DCHECK(m_buffer.isEmpty());
     return false;
 }
 
 } // namespace blink