Add RTC_ prefix to contructormagic macros.

webrtc/modules/audio_coding/neteq/mock/mock_external_decoder_pcm16b.h

Index: webrtc/modules/audio_coding/neteq/mock/mock_external_decoder_pcm16b.h
diff --git a/webrtc/modules/audio_coding/neteq/mock/mock_external_decoder_pcm16b.h b/webrtc/modules/audio_coding/neteq/mock/mock_external_decoder_pcm16b.h
index fca1c2d6eeeb400e5529420c43f321d49eecdf96..8cf89c083d6fe5c36845b51643add702582cea10 100644
--- a/webrtc/modules/audio_coding/neteq/mock/mock_external_decoder_pcm16b.h
+++ b/webrtc/modules/audio_coding/neteq/mock/mock_external_decoder_pcm16b.h
@@ -43,7 +43,7 @@ class ExternalPcm16B : public AudioDecoder {
   size_t Channels() const override { return 1; }
 
  private:
-  DISALLOW_COPY_AND_ASSIGN(ExternalPcm16B);
+  RTC_DISALLOW_COPY_AND_ASSIGN(ExternalPcm16B);
 };
 
 // Create a mock of ExternalPcm16B which delegates all calls to the real object.