Switch voice transport to use Call and Stream instead of VoENetwork.

webrtc/voice_engine/voe_network_impl.cc

Index: webrtc/voice_engine/voe_network_impl.cc
diff --git a/webrtc/voice_engine/voe_network_impl.cc b/webrtc/voice_engine/voe_network_impl.cc
index 556204829518fd84453f376e882238f70fd80210..c8a2469e702146139b1932c73860d1d15add9f50 100644
--- a/webrtc/voice_engine/voe_network_impl.cc
+++ b/webrtc/voice_engine/voe_network_impl.cc
@@ -84,8 +84,8 @@ int VoENetworkImpl::ReceivedRTPPacket(int channel,
     LOG_F(LS_ERROR) << "No external transport for channel: " << channel;
     return -1;
   }
-  return channelPtr->ReceivedRTPPacket((const int8_t*)data, length,
-                                       packet_time);
+  return channelPtr->ReceivedRTPPacket(static_cast<const uint8_t*>(data),
+                                       length, packet_time);
 }
 
 int VoENetworkImpl::ReceivedRTCPPacket(int channel,
@@ -107,7 +107,8 @@ int VoENetworkImpl::ReceivedRTCPPacket(int channel,
     LOG_F(LS_ERROR) << "No external transport for channel: " << channel;
     return -1;
   }
-  return channelPtr->ReceivedRTCPPacket((const int8_t*)data, length);
+  return channelPtr->ReceivedRTCPPacket(static_cast<const uint8_t*>(data),
+                                        length);
 }
 
 }  // namespace webrtc