Emit Media Source codec names as media_log events.

media/base/video_decoder_config.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_VIDEO_DECODER_CONFIG_H_
 #define MEDIA_BASE_VIDEO_DECODER_CONFIG_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 91 matching lines @@
   bool IsValidConfig() const;
 
   // Returns true if all fields in |config| match this config.
   // Note: The contents of |extra_data_| are compared not the raw pointers.
   bool Matches(const VideoDecoderConfig& config) const;
 
   // Returns a human-readable string describing |*this|.  For debugging & test
   // output only.
   std::string AsHumanReadableString() const;
 
+  std::string GetHumanReadableCodecName() const;
+
   VideoCodec codec() const;
   VideoCodecProfile profile() const;
 
   // Video format used to determine YUV buffer sizes.
   VideoFrame::Format format() const;
 
   // Width and height of video frame immediately post-decode. Not all pixels
   // in this region are valid.
   gfx::Size coded_size() const;
 
@@ skipping 29 matching lines @@
   bool is_encrypted_;
 
   // Not using DISALLOW_COPY_AND_ASSIGN here intentionally to allow the compiler
   // generated copy constructor and assignment operator. Since the extra data is
   // typically small, the performance impact is minimal.
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_VIDEO_DECODER_CONFIG_H_