Prepare to rename RTC_NOTREACHED to RTC_DCHECK_NOTREACHED

Add implementation of RTC_DCHECK_NOTREACHED equal to the RTC_NOTREACHED.
The new macros will replace the old one when old one's usage will be
removed. The idea of the renaming to provide a clear signal that this
is debug build only macros and will be stripped in the production build.

Bug: webrtc:9065
Change-Id: I4c35d8b03e74a4b3fd1ae75dba2f9c05643101db
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/237802
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35348}
diff --git a/modules/audio_coding/acm2/acm_receiver_unittest.cc b/modules/audio_coding/acm2/acm_receiver_unittest.cc
index 2338a53..e73acc2 100644
--- a/modules/audio_coding/acm2/acm_receiver_unittest.cc
+++ b/modules/audio_coding/acm2/acm_receiver_unittest.cc
@@ -119,7 +119,7 @@
         rtp_header_,
         rtc::ArrayView<const uint8_t>(payload_data, payload_len_bytes));
     if (ret_val < 0) {
-      RTC_NOTREACHED();
+      RTC_DCHECK_NOTREACHED();
       return -1;
     }
     rtp_header_.sequenceNumber++;
diff --git a/modules/audio_coding/acm2/acm_resampler.cc b/modules/audio_coding/acm2/acm_resampler.cc
index 7c7393d..e307c6c 100644
--- a/modules/audio_coding/acm2/acm_resampler.cc
+++ b/modules/audio_coding/acm2/acm_resampler.cc
@@ -30,7 +30,7 @@
   size_t in_length = in_freq_hz * num_audio_channels / 100;
   if (in_freq_hz == out_freq_hz) {
     if (out_capacity_samples < in_length) {
-      RTC_NOTREACHED();
+      RTC_DCHECK_NOTREACHED();
       return -1;
     }
     memcpy(out_audio, in_audio, in_length * sizeof(int16_t));
diff --git a/modules/audio_coding/acm2/audio_coding_module.cc b/modules/audio_coding/acm2/audio_coding_module.cc
index b742a82..e2081e2 100644
--- a/modules/audio_coding/acm2/audio_coding_module.cc
+++ b/modules/audio_coding/acm2/audio_coding_module.cc
@@ -344,13 +344,13 @@
 int AudioCodingModuleImpl::Add10MsDataInternal(const AudioFrame& audio_frame,
                                                InputData* input_data) {
   if (audio_frame.samples_per_channel_ == 0) {
-    RTC_NOTREACHED();
+    RTC_DCHECK_NOTREACHED();
     RTC_LOG(LS_ERROR) << "Cannot Add 10 ms audio, payload length is zero";
     return -1;
   }
 
   if (audio_frame.sample_rate_hz_ > kMaxInputSampleRateHz) {
-    RTC_NOTREACHED();
+    RTC_DCHECK_NOTREACHED();
     RTC_LOG(LS_ERROR) << "Cannot Add 10 ms audio, input frequency not valid";
     return -1;
   }
diff --git a/modules/audio_coding/acm2/call_statistics.cc b/modules/audio_coding/acm2/call_statistics.cc
index 0aad594..9f3bdad 100644
--- a/modules/audio_coding/acm2/call_statistics.cc
+++ b/modules/audio_coding/acm2/call_statistics.cc
@@ -45,7 +45,7 @@
     }
     case AudioFrame::kUndefined: {
       // If the audio is decoded by NetEq, `kUndefined` is not an option.
-      RTC_NOTREACHED();
+      RTC_DCHECK_NOTREACHED();
     }
   }
 }