Update a ton of audio code to use size_t more correctly and in general reduce

webrtc/voice_engine/test/auto_test/standard/neteq_stats_test.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 37 matching lines @@
   TEST_LOG("    meanWaitingTimeMs           = %i \n",
       network_statistics.meanWaitingTimeMs);
   TEST_LOG("    medianWaitingTimeMs         = %i \n",
       network_statistics.medianWaitingTimeMs);
   TEST_LOG("    minWaitingTimeMs            = %i \n",
       network_statistics.minWaitingTimeMs);
   TEST_LOG("    maxWaitingTimeMs            = %i \n",
       network_statistics.maxWaitingTimeMs);
 
   // This is only set to a non-zero value in off-mode.
-  EXPECT_EQ(0, network_statistics.addedSamples);
+  EXPECT_EQ(0U, network_statistics.addedSamples);
 }