Add Cast PLI support on sender side.

media/cast/net/rtp/cast_message_builder_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/test/simple_test_tick_clock.h"
@@ skipping 13 matching lines @@
 static const int64_t kStartMillisecond = INT64_C(12345678900000);
 
 typedef std::map<uint32_t, size_t> MissingPacketsMap;
 
 class NackFeedbackVerification : public RtpPayloadFeedback {
  public:
   NackFeedbackVerification()
       : triggered_(false), missing_packets_(), last_frame_acked_(0) {}
 
   void CastFeedback(const RtcpCastMessage& cast_feedback) final {
-    EXPECT_EQ(kSsrc, cast_feedback.media_ssrc);
+    EXPECT_EQ(kSsrc, cast_feedback.remote_ssrc);
 
     last_frame_acked_ = cast_feedback.ack_frame_id;
 
     MissingFramesAndPacketsMap::const_iterator frame_it =
         cast_feedback.missing_frames_and_packets.begin();
 
     // Keep track of the number of missing packets per frame.
     missing_packets_.clear();
     while (frame_it != cast_feedback.missing_frames_and_packets.end()) {
       // Check for complete frame lost.
@@ skipping 385 matching lines @@
   SetFrameIds(frame_id, frame_id - 1);
   InsertPacket();
   testing_clock_.Advance(
       base::TimeDelta::FromMilliseconds(kShortTimeIncrementMs));
   EXPECT_TRUE(feedback_.triggered());
   EXPECT_EQ(frame_id, feedback_.last_frame_acked());
 }
 
 }  // namespace cast
 }  // namespace media