Unify Transport and newapi::Transport interfaces.

talk/media/webrtc/webrtcvoiceengine.h

Index: talk/media/webrtc/webrtcvoiceengine.h
diff --git a/talk/media/webrtc/webrtcvoiceengine.h b/talk/media/webrtc/webrtcvoiceengine.h
index 2832fb31f3753de4eb1b66169ce627674973c4f4..5266f55550cfe0537eb9dc88210168a935da5fd4 100644
--- a/talk/media/webrtc/webrtcvoiceengine.h
+++ b/talk/media/webrtc/webrtcvoiceengine.h
@@ -250,16 +250,16 @@ class WebRtcVoiceMediaChannel : public VoiceMediaChannel,
                          VoiceMediaChannel::Error* error) override;
 
   // implements Transport interface
-  int SendPacket(const void* data, size_t len) override {
+  bool SendRtp(const uint8_t* data, size_t len) override {
     rtc::Buffer packet(reinterpret_cast<const uint8_t*>(data), len,
                        kMaxRtpPacketLen);
-    return VoiceMediaChannel::SendPacket(&packet) ? static_cast<int>(len) : -1;
+    return VoiceMediaChannel::SendPacket(&packet);
   }
 
-  int SendRTCPPacket(const void* data, size_t len) override {
+  bool SendRtcp(const uint8_t* data, size_t len) override {
     rtc::Buffer packet(reinterpret_cast<const uint8_t*>(data), len,
                        kMaxRtpPacketLen);
-    return VoiceMediaChannel::SendRtcp(&packet) ? static_cast<int>(len) : -1;
+    return VoiceMediaChannel::SendRtcp(&packet);
   }
 
   bool FindSsrc(int channel_num, uint32* ssrc);