NetEq decoder database: Don't keep track of sample rate for builtin decoders

webrtc/modules/audio_coding/neteq/mock/mock_audio_decoder.h

Index: webrtc/modules/audio_coding/neteq/mock/mock_audio_decoder.h
diff --git a/webrtc/modules/audio_coding/neteq/mock/mock_audio_decoder.h b/webrtc/modules/audio_coding/neteq/mock/mock_audio_decoder.h
index c1cc09cb5e713a5ed9927922683191a339fe6d69..6152799b82af96ce9684f4897e96a31ce6653f2f 100644
--- a/webrtc/modules/audio_coding/neteq/mock/mock_audio_decoder.h
+++ b/webrtc/modules/audio_coding/neteq/mock/mock_audio_decoder.h
@@ -32,6 +32,7 @@ class MockAudioDecoder : public AudioDecoder {
   MOCK_METHOD0(ErrorCode, int());
   MOCK_CONST_METHOD2(PacketDuration, int(const uint8_t*, size_t));
   MOCK_CONST_METHOD0(Channels, size_t());
+  MOCK_CONST_METHOD0(SampleRateHz, int());
   MOCK_CONST_METHOD0(codec_type, NetEqDecoder());
   MOCK_METHOD1(CodecSupported, bool(NetEqDecoder));
 };