Misc. small cleanups

webrtc/modules/audio_coding/test/opus_test.h

Index: webrtc/modules/audio_coding/test/opus_test.h
diff --git a/webrtc/modules/audio_coding/test/opus_test.h b/webrtc/modules/audio_coding/test/opus_test.h
index 090c8fa9ddf35a4a3237c0b10b4633f152e13ee6..88ef0ecdfb9b6d9833b0731bf8015c810edc4b5b 100644
--- a/webrtc/modules/audio_coding/test/opus_test.h
+++ b/webrtc/modules/audio_coding/test/opus_test.h
@@ -31,7 +31,10 @@ class OpusTest : public ACMTest {
   void Perform();
 
  private:
-  void Run(TestPackStereo* channel, int channels, int bitrate, int frame_length,
+  void Run(TestPackStereo* channel,
+           int channels,
+           int bitrate,
+           size_t frame_length,
            int percent_loss = 0);
 
   void OpenOutFile(int test_number);
@@ -44,7 +47,7 @@ class OpusTest : public ACMTest {
   PCMFile out_file_standalone_;
   int counter_;
   uint8_t payload_type_;
-  int rtp_timestamp_;
+  uint32_t rtp_timestamp_;
   acm2::ACMResampler resampler_;
   WebRtcOpusEncInst* opus_mono_encoder_;
   WebRtcOpusEncInst* opus_stereo_encoder_;