Prepare to convert various types to size_t.

webrtc/modules/audio_coding/neteq/normal.cc

 /*
  *  Copyright (c) 2012 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.
  */
 
@@ skipping 65 matching lines @@
       int16_t decoded_max = WebRtcSpl_MaxAbsValueW16(
         signal,  static_cast<int>(length_per_channel));
       // Adjust muting factor if needed (to BGN level).
       int energy_length = std::min(static_cast<int>(fs_mult * 64),
                                    static_cast<int>(length_per_channel));
       int scaling = 6 + fs_shift
           - WebRtcSpl_NormW32(decoded_max * decoded_max);
       scaling = std::max(scaling, 0);  // |scaling| should always be >= 0.
       int32_t energy = WebRtcSpl_DotProductWithScale(signal, signal,
                                                      energy_length, scaling);
-      if ((energy_length >> scaling) > 0) {
-        energy = energy / (energy_length >> scaling);
+      int32_t scaled_energy_length =
+          static_cast<int32_t>(energy_length >> scaling);
+      if (scaled_energy_length > 0) {
+        energy = energy / scaled_energy_length;
       } else {
         energy = 0;
       }
 
       int mute_factor;
       if ((energy != 0) &&
           (energy > background_noise_.Energy(channel_ix))) {
         // Normalize new frame energy to 15 bits.
         scaling = WebRtcSpl_NormW32(energy) - 16;
         // We want background_noise_.energy() / energy in Q14.
@@ skipping 92 matching lines @@
         external_mute_factor_array[channel_ix] =
             std::min(16384, external_mute_factor_array[channel_ix] + increment);
       }
     }
   }
 
   return static_cast<int>(length);
 }
 
 }  // namespace webrtc