Enable probing with repeated payload packets by default.

talk/media/base/fakenetworkinterface.h

Index: talk/media/base/fakenetworkinterface.h
diff --git a/talk/media/base/fakenetworkinterface.h b/talk/media/base/fakenetworkinterface.h
index 424101e419560c4a8cfae6664770f3e326d2580a..5178e67eeb1da95435ef22defbc33a414f88f70a 100644
--- a/talk/media/base/fakenetworkinterface.h
+++ b/talk/media/base/fakenetworkinterface.h
@@ -123,11 +123,6 @@ class FakeNetworkInterface : public MediaChannel::NetworkInterface,
     return new rtc::Buffer(rtcp_packets_[index]);
   }
 
-  // Indicate that |n|'th packet for |ssrc| should be dropped.
-  void AddPacketDrop(uint32 ssrc, uint32 n) {
-    drop_map_[ssrc].insert(n);
-  }
-
   int sendbuf_size() const { return sendbuf_size_; }
   int recvbuf_size() const { return recvbuf_size_; }
   rtc::DiffServCodePoint dscp() const { return dscp_; }
@@ -143,15 +138,6 @@ class FakeNetworkInterface : public MediaChannel::NetworkInterface,
     }
     sent_ssrcs_[cur_ssrc]++;
 
-    // Check if we need to drop this packet.
-    std::map<uint32, std::set<uint32> >::iterator itr =
-      drop_map_.find(cur_ssrc);
-    if (itr != drop_map_.end() &&
-        itr->second.count(sent_ssrcs_[cur_ssrc]) > 0) {
-        // "Drop" the packet.
-        return true;
-    }
-
     rtp_packets_.push_back(*packet);
     if (conf_) {
       rtc::Buffer buffer_copy(*packet);