Use RtpFileSource in NetEqDecodingTest

This CL removes the dependency on the old NETEQTEST_RTPpacket class
from the NetEqDecodingTest code, and also removes the dependency
from the modules_unittests target to neteq_test_tools.

BUG=2692
R=tina.legrand@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/24269004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7709 4adac7df-926f-26a2-2b94-8c16560cd09d

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

@@ -14,13 +14,12 @@
 #include <bitset>
 
 #include "webrtc/base/constructormagic.h"
+#include "webrtc/modules/audio_coding/neteq/tools/packet.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 namespace test {
 
-class Packet;
-
 // Interface class for an object delivering RTP packets to test applications.
 class PacketSource {
  public: