Add one API for implementing Initial delay.

R=minyue@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1939004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4475 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 eff6115..cdc4164 100644
--- a/webrtc/modules/audio_coding/neteq4/neteq_impl.h
+++ b/webrtc/modules/audio_coding/neteq4/neteq_impl.h
@@ -164,6 +164,11 @@
   // Flushes both the packet buffer and the sync buffer.
   virtual void FlushBuffers();
 
+  virtual void PacketBufferStatistics(int* current_num_packets,
+                                      int* max_num_packets,
+                                      int* current_memory_size_bytes,
+                                      int* max_memory_size_bytes) const;
+
  private:
   static const int kOutputSizeMs = 10;
   static const int kMaxFrameSize = 2880;  // 60 ms @ 48 kHz.