Move MinPositive to call.h

webrtc/media/engine/webrtcvoiceengine.cc

Index: webrtc/media/engine/webrtcvoiceengine.cc
diff --git a/webrtc/media/engine/webrtcvoiceengine.cc b/webrtc/media/engine/webrtcvoiceengine.cc
index 1f197a33e8d4b7261bf52531e686b4e5598e93d9..0fef4fd0a8aa66ee8133193644a86da3ea003cf7 100644
--- a/webrtc/media/engine/webrtcvoiceengine.cc
+++ b/webrtc/media/engine/webrtcvoiceengine.cc
@@ -181,9 +181,10 @@ rtc::Optional<int> ComputeSendBitrate(int max_send_bitrate_bps,
                                       const webrtc::AudioCodecSpec& spec) {
   // If application-configured bitrate is set, take minimum of that and SDP
   // bitrate.
-  const int bps = rtp_max_bitrate_bps
-                      ? MinPositive(max_send_bitrate_bps, *rtp_max_bitrate_bps)
-                      : max_send_bitrate_bps;
+  const int bps =
+      rtp_max_bitrate_bps
+          ? webrtc::MinPositive(max_send_bitrate_bps, *rtp_max_bitrate_bps)
+          : max_send_bitrate_bps;
   if (bps <= 0) {
     return rtc::Optional<int>(spec.info.default_bitrate_bps);
   }