Match existing type usage better.

webrtc/modules/audio_coding/neteq/expand.h

 /*
  *  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 48 matching lines @@
     assert(channel < num_channels_);
     return channel_parameters_[channel].mute_factor;
   }
 
   // Accessors and mutators.
   virtual size_t overlap_length() const;
   int16_t max_lag() const { return max_lag_; }
 
  protected:
   static const int kMaxConsecutiveExpands = 200;
-  void GenerateRandomVector(int seed_increment,
+  void GenerateRandomVector(int16_t seed_increment,
                             size_t length,
                             int16_t* random_vector);
 
   void GenerateBackgroundNoise(int16_t* random_vector,
                                size_t channel,
                                int16_t mute_slope,
                                bool too_many_expands,
                                size_t num_noise_samples,
                                int16_t* buffer);
 
@@ skipping 63 matching lines @@
 
   virtual Expand* Create(BackgroundNoise* background_noise,
                          SyncBuffer* sync_buffer,
                          RandomVector* random_vector,
                          int fs,
                          size_t num_channels) const;
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_EXPAND_H_