Don't expect factory to create iLBC decoder if it isn't supported

webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory_unittest.cc

Index: webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory_unittest.cc
diff --git a/webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory_unittest.cc b/webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory_unittest.cc
index 7e67095276f46b9dc71a2650459192e9f475ec68..f6b44b6d3faddbbb68798b7afde3866dd7194d4d 100644
--- a/webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory_unittest.cc
+++ b/webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory_unittest.cc
@@ -52,7 +52,9 @@ TEST(AudioDecoderFactoryTest, CreateIlbc) {
   ASSERT_TRUE(adf);
   // iLBC supports 8 kHz, 1 channel.
   EXPECT_FALSE(adf->MakeAudioDecoder(SdpAudioFormat("ilbc", 8000, 0)));
+#ifdef WEBRTC_CODEC_ILBC
   EXPECT_TRUE(adf->MakeAudioDecoder(SdpAudioFormat("ilbc", 8000, 1)));
+#endif
   EXPECT_FALSE(adf->MakeAudioDecoder(SdpAudioFormat("ilbc", 8000, 2)));
   EXPECT_FALSE(adf->MakeAudioDecoder(SdpAudioFormat("ilbc", 16000, 1)));
 }