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

webrtc/modules/audio_coding/neteq/mock/mock_delay_manager.h

Index: webrtc/modules/audio_coding/neteq/mock/mock_delay_manager.h
diff --git a/webrtc/modules/audio_coding/neteq/mock/mock_delay_manager.h b/webrtc/modules/audio_coding/neteq/mock/mock_delay_manager.h
index 1d2dc8ea3d54717ea68610fe142de8961ac9262b..6fb85854d774fb3f5527be285444e54011b6829d 100644
--- a/webrtc/modules/audio_coding/neteq/mock/mock_delay_manager.h
+++ b/webrtc/modules/audio_coding/neteq/mock/mock_delay_manager.h
@@ -19,7 +19,8 @@ namespace webrtc {
 
 class MockDelayManager : public DelayManager {
  public:
-  MockDelayManager(int max_packets_in_buffer, DelayPeakDetector* peak_detector)
+  MockDelayManager(size_t max_packets_in_buffer,
+                   DelayPeakDetector* peak_detector)
       : DelayManager(max_packets_in_buffer, peak_detector) {}
   virtual ~MockDelayManager() { Die(); }
   MOCK_METHOD0(Die, void());