Measure packet loss so we can use it to select ICE candidate pairs.

webrtc/p2p/BUILD.gn

 # Copyright (c) 2016 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.
 
 import("../webrtc.gni")
 
@@ skipping 19 matching lines @@
     "base/dtlstransportchannel.cc",
     "base/dtlstransportchannel.h",
     "base/dtlstransportinternal.h",
     "base/icetransportinternal.h",
     "base/jseptransport.cc",
     "base/jseptransport.h",
     "base/p2pconstants.cc",
     "base/p2pconstants.h",
     "base/p2ptransportchannel.cc",
     "base/p2ptransportchannel.h",
+    "base/packetlossestimator.cc",
+    "base/packetlossestimator.h",
     "base/packetsocketfactory.h",
     "base/packettransportinterface.h",
     "base/packettransportinternal.h",
     "base/port.cc",
     "base/port.h",
     "base/portallocator.cc",
     "base/portallocator.h",
     "base/portinterface.h",
     "base/pseudotcp.cc",
     "base/pseudotcp.h",
@@ skipping 96 matching lines @@
       "base/asyncstuntcpsocket_unittest.cc",
       "base/dtlstransportchannel_unittest.cc",
       "base/fakedtlstransport.h",
       "base/fakeicetransport.h",
       "base/fakepackettransport.h",
       "base/fakeportallocator.h",
       "base/faketransportcontroller.h",
       "base/jseptransport_unittest.cc",
       "base/mockicetransport.h",
       "base/p2ptransportchannel_unittest.cc",
+      "base/packetlossestimator_unittest.cc",
       "base/port_unittest.cc",
       "base/portallocator_unittest.cc",
       "base/pseudotcp_unittest.cc",
       "base/relayport_unittest.cc",
       "base/relayserver_unittest.cc",
       "base/stun_unittest.cc",
       "base/stunport_unittest.cc",
       "base/stunrequest_unittest.cc",
       "base/stunserver_unittest.cc",
       "base/tcpport_unittest.cc",
@@ skipping 58 matching lines @@
       "//testing/gmock",
       "//testing/gtest",
     ]
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
     defines = [ "GTEST_RELATIVE_PATH" ]
   }
 }