Update audio code to use size_t more correctly,

webrtc/modules/audio_coding/neteq/post_decode_vad.h

 /*
  *  Copyright (c) 2013 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 28 matching lines @@
   void Enable();
 
   // Disables post-decode VAD.
   void Disable();
 
   // Initializes post-decode VAD.
   void Init();
 
   // Updates post-decode VAD with the audio data in |signal| having |length|
   // samples. The data is of type |speech_type|, at the sample rate |fs_hz|.
-  void Update(int16_t* signal, int length,
+  void Update(int16_t* signal, size_t length,
               AudioDecoder::SpeechType speech_type, bool sid_frame, int fs_hz);
 
   // Accessors.
   bool enabled() const { return enabled_; }
   bool running() const { return running_; }
   bool active_speech() const { return active_speech_; }
 
  private:
   static const int kVadMode = 0;  // Sets aggressiveness to "Normal".
   // Number of Update() calls without CNG/SID before re-enabling VAD.
   static const int kVadAutoEnable = 3000;
 
   bool enabled_;
   bool running_;
   bool active_speech_;
   int sid_interval_counter_;
   ::VadInst* vad_instance_;
 
   DISALLOW_COPY_AND_ASSIGN(PostDecodeVad);
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_POST_DECODE_VAD_H_