MediaLog: Log selected audio/video decoder name.

media/tools/player_x11/player_x11.cc

Index: media/tools/player_x11/player_x11.cc
diff --git a/media/tools/player_x11/player_x11.cc b/media/tools/player_x11/player_x11.cc
index e5df83ccb5e13d5c8b3168a21cdd662b94f06365..803e79df99a3f2f24939c19a6ea8611116e27a5b 100644
--- a/media/tools/player_x11/player_x11.cc
+++ b/media/tools/player_x11/player_x11.cc
@@ -58,6 +58,8 @@ scoped_ptr<media::DataSource> CreateDataSource(const std::string& file_path) {
   return data_source.Pass();
 }
 
+static void LogFunc(const std::string& str) { DVLOG(1) << str; }
+
 // Initialize X11. Returns true if successful. This method creates the X11
 // window. Further initialization is done in X11VideoRenderer.
 bool InitX11() {
@@ -121,7 +123,8 @@ void InitPipeline(
                                    video_decoders.Pass(),
                                    media::SetDecryptorReadyCB(),
                                    paint_cb,
-                                   true));
+                                   true,
+                                   base::Bind(&LogFunc)));
 
   ScopedVector<media::AudioDecoder> audio_decoders;
   audio_decoders.push_back(new media::FFmpegAudioDecoder(task_runner,
@@ -139,7 +142,8 @@ void InitPipeline(
                                    new media::NullAudioSink(task_runner),
                                    audio_decoders.Pass(),
                                    media::SetDecryptorReadyCB(),
-                                   hardware_config));
+                                   hardware_config,
+                                   base::Bind(&LogFunc)));
 
   scoped_ptr<media::Renderer> renderer(new media::RendererImpl(
       task_runner, demuxer, audio_renderer.Pass(), video_renderer.Pass()));