MediaLog: Log selected audio/video decoder name.

media/filters/audio_renderer_impl_unittest.cc

Index: media/filters/audio_renderer_impl_unittest.cc
diff --git a/media/filters/audio_renderer_impl_unittest.cc b/media/filters/audio_renderer_impl_unittest.cc
index fc6c781d3722ea40cb40c348a3a3d19e28c80f90..fe5a446d154952332fa3abcbaf419a599a17b96a 100644
--- a/media/filters/audio_renderer_impl_unittest.cc
+++ b/media/filters/audio_renderer_impl_unittest.cc
@@ -50,6 +50,8 @@ static int kChannels = ChannelLayoutToChannelCount(kChannelLayout);
 static int kInputSamplesPerSecond = 5000;
 static int kOutputSamplesPerSecond = 10000;
 
+static void LogFunc(const std::string& str) { DVLOG(1) << str; }
+
 ACTION_P(EnterPendingDecoderInitStateAction, test) {
   test->EnterPendingDecoderInitState(arg1);
 }
@@ -98,7 +100,8 @@ class AudioRendererImplTest : public ::testing::Test {
                                           sink_.get(),
                                           decoders.Pass(),
                                           SetDecryptorReadyCB(),
-                                          hardware_config_));
+                                          hardware_config_,
+                                          base::Bind(&LogFunc)));
   }
 
   virtual ~AudioRendererImplTest() {