rtcp::App moved into own file and got Parse function

webrtc/modules/rtp_rtcp/source/rtcp_packet_unittest.cc

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  *
  * This file includes unit tests for the RtcpPacket.
  */
 
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet.h"
+#include "webrtc/modules/rtp_rtcp/source/rtcp_packet/app.h"
 #include "webrtc/test/rtcp_packet_parser.h"
 
 using ::testing::ElementsAre;
 
 using webrtc::rtcp::App;
 using webrtc::rtcp::Bye;
 using webrtc::rtcp::Dlrr;
 using webrtc::rtcp::Empty;
 using webrtc::rtcp::Fir;
 using webrtc::rtcp::Ij;
@@ skipping 1052 matching lines @@
     EXPECT_TRUE(xr.WithDlrr(&dlrr));
   EXPECT_FALSE(xr.WithDlrr(&dlrr));
 
   VoipMetric voip_metric;
   for (int i = 0; i < kMaxBlocks; ++i)
     EXPECT_TRUE(xr.WithVoipMetric(&voip_metric));
   EXPECT_FALSE(xr.WithVoipMetric(&voip_metric));
 }
 
 }  // namespace webrtc