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

webrtc/common_audio/vad/vad_sp_unittest.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 23 matching lines @@
   static const int16_t kReferenceMin[32] = {
       1600, 720, 509, 512, 532, 552, 570, 588,
        606, 624, 642, 659, 675, 691, 707, 723,
       1600, 544, 502, 522, 542, 561, 579, 597,
        615, 633, 651, 667, 683, 699, 715, 731
   };
 
   // Construct a speech signal that will trigger the VAD in all modes. It is
   // known that (i * i) will wrap around, but that doesn't matter in this case.
   for (int16_t i = 0; i < kMaxFrameLenSp; ++i) {
-    data_in[i] = (i * i);
+    data_in[i] = static_cast<int16_t>(i * i);
   }
   // Input values all zeros, expect all zeros out.
   WebRtcVad_Downsampling(zeros, data_out, state, kMaxFrameLenSp);
   EXPECT_EQ(0, state[0]);
   EXPECT_EQ(0, state[1]);
   for (int16_t i = 0; i < kMaxFrameLenSp / 2; ++i) {
     EXPECT_EQ(0, data_out[i]);
   }
   // Make a simple non-zero data test.
   WebRtcVad_Downsampling(data_in, data_out, state, kMaxFrameLenSp);
@@ skipping 10 matching lines @@
       // Use values both above and below initialized value.
       EXPECT_EQ(kReferenceMin[i], WebRtcVad_FindMinimum(self, value, j));
       EXPECT_EQ(kReferenceMin[i + 16], WebRtcVad_FindMinimum(self, 12000, j));
     }
     self->frame_counter++;
   }
 
   free(self);
 }
 }  // namespace