Revert of media config: expand is_encrypted to a struct.

media/filters/audio_decoder_selector_unittest.cc

Index: media/filters/audio_decoder_selector_unittest.cc
diff --git a/media/filters/audio_decoder_selector_unittest.cc b/media/filters/audio_decoder_selector_unittest.cc
index 0d87edcaefe205a8d4ff9ee6e57d60408ee8d248..92c4a73a1cc7a6d8ea91911f6614be3ad165120e 100644
--- a/media/filters/audio_decoder_selector_unittest.cc
+++ b/media/filters/audio_decoder_selector_unittest.cc
@@ -77,14 +77,14 @@
   void UseClearStream() {
     AudioDecoderConfig clear_audio_config(kCodecVorbis, kSampleFormatPlanarF32,
                                           CHANNEL_LAYOUT_STEREO, 44100,
-                                          EmptyExtraData(), Unencrypted());
+                                          EmptyExtraData(), false);
     demuxer_stream_->set_audio_decoder_config(clear_audio_config);
   }
 
   void UseEncryptedStream() {
     AudioDecoderConfig encrypted_audio_config(
         kCodecVorbis, kSampleFormatPlanarF32, CHANNEL_LAYOUT_STEREO, 44100,
-        EmptyExtraData(), AesCtrEncryptionScheme());
+        EmptyExtraData(), true);
     demuxer_stream_->set_audio_decoder_config(encrypted_audio_config);
   }