Replace calls to assert() with RTC_DCHECK_*() in .c code

webrtc/modules/audio_coding/codecs/isac/fix/source/filters.c

 /*
  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include <assert.h>
-
+#include "webrtc/base/checks.h"
 #include "webrtc/modules/audio_coding/codecs/isac/fix/source/codec.h"
 
 // Autocorrelation function in fixed point.
 // NOTE! Different from SPLIB-version in how it scales the signal.
 int WebRtcIsacfix_AutocorrC(int32_t* __restrict r,
                             const int16_t* __restrict x,
                             int16_t N,
                             int16_t order,
                             int16_t* __restrict scale) {
   int i = 0;
   int j = 0;
   int16_t scaling = 0;
   int32_t sum = 0;
   uint32_t temp = 0;
   int64_t prod = 0;
 
   // The ARM assembly code assumptoins.
-  assert(N % 4 == 0);
-  assert(N >= 8);
+  RTC_DCHECK_EQ(0, N % 4);
+  RTC_DCHECK_GE(N, 8);
 
   // Calculate r[0].
   for (i = 0; i < N; i++) {
     prod += x[i] * x[i];
   }
 
   // Calculate scaling (the value of shifting).
   temp = (uint32_t)(prod >> 31);
   if(temp == 0) {
     scaling = 0;
@@ skipping 62 matching lines @@
 
 
 
   AllpassFilterForDec32(data_vec+1, kApUpperQ15, N, state_in);
   AllpassFilterForDec32(data_vec, kApLowerQ15, N, state_in+ALLPASSSECTIONS);
 
   for (n=0;n<N/2;n++) {
     out[n] = WebRtcSpl_AddSatW16(data_vec[2 * n], data_vec[2 * n + 1]);
   }
 }