Miscellaneous changes split from https://codereview.webrtc.org/1230503003 .

webrtc/common_audio/vad/vad_filterbank_unittest.cc

Index: webrtc/common_audio/vad/vad_filterbank_unittest.cc
diff --git a/webrtc/common_audio/vad/vad_filterbank_unittest.cc b/webrtc/common_audio/vad/vad_filterbank_unittest.cc
index d274c4b131cd493ae62a6b495fe35028724481fe..4232cbcff491a6de2bbdedf1abda96d29041a803 100644
--- a/webrtc/common_audio/vad/vad_filterbank_unittest.cc
+++ b/webrtc/common_audio/vad/vad_filterbank_unittest.cc
@@ -39,7 +39,7 @@ TEST_F(VadTest, vad_filterbank) {
   // known that (i * i) will wrap around, but that doesn't matter in this case.
   int16_t speech[kMaxFrameLength];
   for (int16_t i = 0; i < kMaxFrameLength; ++i) {
-    speech[i] = (i * i);
+    speech[i] = static_cast<int16_t>(i * i);
   }
 
   int frame_length_index = 0;