Change PacketKey to be unique for each frame packet by including

media/cast/net/rtp/packet_storage_unittest.cc

Index: media/cast/net/rtp/packet_storage_unittest.cc
diff --git a/media/cast/net/rtp/packet_storage_unittest.cc b/media/cast/net/rtp/packet_storage_unittest.cc
index 7dc5a53a0effd46cd14a42857b988d54c921e9e4..fe8293c7a372ddcd107fcfdcf71c9c2d332b2edb 100644
--- a/media/cast/net/rtp/packet_storage_unittest.cc
+++ b/media/cast/net/rtp/packet_storage_unittest.cc
@@ -32,10 +32,10 @@ static void StoreFrames(size_t number_of_frames,
     const size_t kNumberOfPackets = i + 1;
     for (size_t j = 0; j < kNumberOfPackets; ++j) {
       Packet test_packet(1, 0);
-      packets.push_back(
-          std::make_pair(PacedPacketSender::MakePacketKey(
-                             kTicks, kSsrc, base::checked_cast<uint16>(j)),
-                         new base::RefCountedData<Packet>(test_packet)));
+      packets.push_back(std::make_pair(
+          PacedPacketSender::MakePacketKey(PacketKey::RTP, i, kSsrc,
+                                           base::checked_cast<uint16>(j)),
+          new base::RefCountedData<Packet>(test_packet)));
     }
     storage->StoreFrame(first_frame_id, packets);
     ++first_frame_id;