Replace RTC_DCHECK(false) with RTC_NOTREACHED().

webrtc/modules/audio_processing/test/bitexactness_tools.cc

Index: webrtc/modules/audio_processing/test/bitexactness_tools.cc
diff --git a/webrtc/modules/audio_processing/test/bitexactness_tools.cc b/webrtc/modules/audio_processing/test/bitexactness_tools.cc
index 59b9325ad775d62586310894ffc0957fcd2c8942..9c8a97ce0cae0fc953c1917fe3865fd883534209 100644
--- a/webrtc/modules/audio_processing/test/bitexactness_tools.cc
+++ b/webrtc/modules/audio_processing/test/bitexactness_tools.cc
@@ -32,7 +32,7 @@ std::string GetApmRenderTestVectorFileName(int sample_rate_hz) {
     case 48000:
       return ResourcePath("far48_stereo", "pcm");
     default:
-      RTC_DCHECK(false);
+      RTC_NOTREACHED();
   }
   return "";
 }
@@ -48,7 +48,7 @@ std::string GetApmCaptureTestVectorFileName(int sample_rate_hz) {
     case 48000:
       return ResourcePath("near48_stereo", "pcm");
     default:
-      RTC_DCHECK(false);
+      RTC_NOTREACHED();
   }
   return "";
 }