Re-enable PCAP reading in neteq_rtpplay

webrtc/modules/audio_coding/neteq/tools/rtp_file_source.h

Index: webrtc/modules/audio_coding/neteq/tools/rtp_file_source.h
diff --git a/webrtc/modules/audio_coding/neteq/tools/rtp_file_source.h b/webrtc/modules/audio_coding/neteq/tools/rtp_file_source.h
index d0856a819ce94b21b7c6cb7d8b3d3d13f3814eac..cd7d7e874c82192fcee7d8aac9e379b54cac7566 100644
--- a/webrtc/modules/audio_coding/neteq/tools/rtp_file_source.h
+++ b/webrtc/modules/audio_coding/neteq/tools/rtp_file_source.h
@@ -34,6 +34,10 @@ class RtpFileSource : public PacketSource {
   // opened, or has the wrong format, NULL will be returned.
   static RtpFileSource* Create(const std::string& file_name);
 
+  // Checks whether a files is a valid RTP dump or PCAP (Wireshark) file.
+  static bool ValidRtpDump(const std::string& file_name);
+  static bool ValidPcap(const std::string& file_name);
+
   virtual ~RtpFileSource();
 
   // Registers an RTP header extension and binds it to |id|.