Update ChromiumPacketSocket factory to apply PacketOptions it receives.

In Chromium libjingle is compiled with ENABLED_EXTERNAL_AUTH. This means
that the sending PacketSocketFactory is responsible for updating send
time in the outgoing RTP packets and calculating HMAC.
ChromiumPacketSocket previously wasn't doing that, so the receiver could
not validate the RTP packets.

BUG=547158

Review URL: https://codereview.chromium.org/1574353003

Cr-Commit-Position: refs/heads/master@{#369885}

remoting/protocol/chromium_socket_factory.cc

@@ -10,12 +10,14 @@
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/time/time.h"
 #include "jingle/glue/utils.h"
 #include "net/base/io_buffer.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/net_errors.h"
 #include "net/udp/udp_server_socket.h"
 #include "remoting/protocol/socket_util.h"
+#include "third_party/libjingle/source/talk/media/base/rtputils.h"
 #include "third_party/webrtc/base/asyncpacketsocket.h"
 #include "third_party/webrtc/base/nethelpers.h"
 
@@ -194,7 +196,12 @@ int UdpPacketSocket::SendTo(const void* data, size_t data_size,
     return EWOULDBLOCK;
   }
 
-  send_queue_.push_back(PendingPacket(data, data_size, endpoint));
+  PendingPacket packet(data, data_size, endpoint);
+  cricket::ApplyPacketOptions(
+      reinterpret_cast<uint8_t*>(packet.data->data()), data_size,
+      options.packet_time_params,
+      (base::TimeTicks::Now() - base::TimeTicks()).InMilliseconds());
+  send_queue_.push_back(packet);
   send_queue_size_ += data_size;
 
   DoSend();