Adding APIs. These APIs are not implemented yet, they are to help developement of ACM.

Un-implemented APIs.

TBR=henrik.lundin@webrtc.org
BUG=

Review URL: https://webrtc-codereview.appspot.com/2191008

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4725 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/neteq4/neteq_impl.h b/webrtc/modules/audio_coding/neteq4/neteq_impl.h
index b000961..9bdafdd 100644
--- a/webrtc/modules/audio_coding/neteq4/neteq_impl.h
+++ b/webrtc/modules/audio_coding/neteq4/neteq_impl.h
@@ -171,6 +171,13 @@
   // This method is to facilitate NACK.
   virtual int DecodedRtpInfo(int* sequence_number, uint32_t* timestamp);
 
+  virtual int InsertSyncPacket(const WebRtcRTPHeader& rtp_header,
+                                 uint32_t receive_timestamp);
+
+  virtual void SetBackgroundNoiseMode(NetEqBackgroundNoiseMode mode);
+
+  virtual NetEqBackgroundNoiseMode BackgroundNoiseMode() const;
+
  private:
   static const int kOutputSizeMs = 10;
   static const int kMaxFrameSize = 2880;  // 60 ms @ 48 kHz.