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

Index: webrtc/voice_engine/test/auto_test/standard/neteq_stats_test.cc
diff --git a/webrtc/voice_engine/test/auto_test/standard/neteq_stats_test.cc b/webrtc/voice_engine/test/auto_test/standard/neteq_stats_test.cc
index f3be6355ba047618732fb73178f126fe47121e08..94a2c42e15ff57745d23764e455caf71bd688a16 100644
--- a/webrtc/voice_engine/test/auto_test/standard/neteq_stats_test.cc
+++ b/webrtc/voice_engine/test/auto_test/standard/neteq_stats_test.cc
@@ -55,5 +55,5 @@ TEST_F(NetEQStatsTest, ManualPrintStatisticsAfterRunningAWhile) {
       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);
 }