Revert of GN: Add BUILD.gn files for webrtc/{api,media,libjingle,p2p,pc} (patchset #2 id:20001 of https://codereview.webrtc.org/1973313002/ )

Reason for revert:
Breaks GN in Chromium (again), even though I tested this configuration: https://build.chromium.org/p/chromium.webrtc.fyi/builders/Linux%20Builder/builds/6000/steps/generate_build_files/logs/stdio

Original issue's description:
> Reland of GN: Add BUILD.gn files for webrtc/{api,media,libjingle,p2p,pc}
>
> Add BUILD.gn files for webrtc/{api,media,libjingle,p2p,pc} in
> preparation for removing src/third_party/libjingle in Chromium.
>
> BUG=webrtc:4256
> NOTRY=True
> TBR=perkj@webrtc.org
>
> Committed: https://crrev.com/c8d848b1049d8b9e8e33e023d13bec1180dd4926
> Cr-Commit-Position: refs/heads/master@{#12731}

TBR=perkj@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:4256

Review-Url: https://codereview.webrtc.org/1975223002
Cr-Original-Commit-Position: refs/heads/master@{#12733}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: fb1dd43ac137e50c0c26e97f5e9866135da24e2c
diff --git a/BUILD.gn b/BUILD.gn
index 374e652..e1aeb45 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -84,10 +84,6 @@
     all_dependent_configs = [ "dbus-glib" ]
   }
 
-  if (rtc_relative_path) {
-    defines += [ "EXPAT_RELATIVE_PATH" ]
-  }
-
   if (build_with_chromium) {
     defines += [ "LOGGING_INSIDE_WEBRTC" ]
   } else {
@@ -186,13 +182,11 @@
 
   deps = [
     ":webrtc_common",
-    "api",
     "audio",
     "base:rtc_base",
     "call",
     "common_audio",
     "common_video",
-    "media",
     "modules/audio_coding",
     "modules/audio_conference_mixer",
     "modules/audio_device",
@@ -204,8 +198,6 @@
     "modules/utility",
     "modules/video_coding",
     "modules/video_processing",
-    "p2p",
-    "pc",
     "system_wrappers",
     "tools",
     "video",
diff --git a/api/BUILD.gn b/api/BUILD.gn
index f84010d..6dc5217 100644
--- a/api/BUILD.gn
+++ b/api/BUILD.gn
@@ -7,130 +7,3 @@
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../build/webrtc.gni")
-
-group("api") {
-  deps = [
-    ":libjingle_peerconnection",
-  ]
-}
-
-config("libjingle_peerconnection_warnings_config") {
-  # GN orders flags on a target before flags from configs. The default config
-  # adds these flags so to cancel them out they need to come from a config and
-  # cannot be on the target directly.
-  if (!is_win) {
-    cflags = [ "-Wno-sign-compare" ]
-    if (!is_clang) {
-      cflags += [ "-Wno-maybe-uninitialized" ]  # Only exists for GCC.
-    }
-  }
-}
-
-source_set("libjingle_peerconnection") {
-  cflags = []
-  sources = [
-    "audiotrack.cc",
-    "audiotrack.h",
-    "datachannel.cc",
-    "datachannel.h",
-    "datachannelinterface.h",
-    "dtlsidentitystore.cc",
-    "dtlsidentitystore.h",
-    "dtmfsender.cc",
-    "dtmfsender.h",
-    "dtmfsenderinterface.h",
-    "jsep.h",
-    "jsepicecandidate.cc",
-    "jsepicecandidate.h",
-    "jsepsessiondescription.cc",
-    "jsepsessiondescription.h",
-    "localaudiosource.cc",
-    "localaudiosource.h",
-    "mediaconstraintsinterface.cc",
-    "mediaconstraintsinterface.h",
-    "mediacontroller.cc",
-    "mediacontroller.h",
-    "mediastream.cc",
-    "mediastream.h",
-    "mediastreaminterface.h",
-    "mediastreamobserver.cc",
-    "mediastreamobserver.h",
-    "mediastreamprovider.h",
-    "mediastreamproxy.h",
-    "mediastreamtrack.h",
-    "mediastreamtrackproxy.h",
-    "notifier.h",
-    "peerconnection.cc",
-    "peerconnection.h",
-    "peerconnectionfactory.cc",
-    "peerconnectionfactory.h",
-    "peerconnectionfactoryproxy.h",
-    "peerconnectioninterface.h",
-    "peerconnectionproxy.h",
-    "proxy.h",
-    "remoteaudiosource.cc",
-    "remoteaudiosource.h",
-    "rtpparameters.h",
-    "rtpreceiver.cc",
-    "rtpreceiver.h",
-    "rtpreceiverinterface.h",
-    "rtpsender.cc",
-    "rtpsender.h",
-    "rtpsenderinterface.h",
-    "sctputils.cc",
-    "sctputils.h",
-    "statscollector.cc",
-    "statscollector.h",
-    "statstypes.cc",
-    "statstypes.h",
-    "streamcollection.h",
-    "videocapturertracksource.cc",
-    "videocapturertracksource.h",
-    "videosourceproxy.h",
-    "videotrack.cc",
-    "videotrack.h",
-    "videotracksource.cc",
-    "videotracksource.h",
-    "webrtcsdp.cc",
-    "webrtcsdp.h",
-    "webrtcsession.cc",
-    "webrtcsession.h",
-    "webrtcsessiondescriptionfactory.cc",
-    "webrtcsessiondescriptionfactory.h",
-  ]
-
-  configs += [
-    "..:common_config",
-    ":libjingle_peerconnection_warnings_config",
-  ]
-  public_configs = [ "..:common_inherited_config" ]
-
-  if (is_clang) {
-    # Suppress warnings from Chrome's Clang plugins.
-    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
-    configs -= [ "//build/config/clang:extra_warnings" ]
-    configs -= [ "//build/config/clang:find_bad_constructs" ]
-  }
-
-  if (is_win) {
-    cflags += [ "/wd4389" ]  # signed/unsigned mismatch.
-  }
-
-  deps = [
-    "../media",
-    "../pc",
-  ]
-
-  if (rtc_use_quic) {
-    sources += [
-      "quicdatachannel.cc",
-      "quicdatachannel.h",
-      "quicdatatransport.cc",
-      "quicdatatransport.h",
-    ]
-    deps += [ "//third_party/libquic" ]
-    public_deps = [
-      "//third_party/libquic",
-    ]
-  }
-}
diff --git a/build/webrtc.gni b/build/webrtc.gni
index 72664c9..8e1b952 100644
--- a/build/webrtc.gni
+++ b/build/webrtc.gni
@@ -15,9 +15,6 @@
   # Disable this to avoid building the Opus audio codec.
   rtc_include_opus = true
 
-  # Disable to use absolute header paths for some libraries.
-  rtc_relative_path = true
-
   # Used to specify an external Jsoncpp include path when not compiling the
   # library that comes with WebRTC (i.e. rtc_build_json == 0).
   rtc_jsoncpp_root = "//third_party/jsoncpp/source/include"
@@ -40,13 +37,11 @@
   rtc_build_expat = true
   rtc_build_json = true
   rtc_build_libjpeg = true
-  rtc_build_libsrtp = true
   rtc_build_libvpx = true
   rtc_build_libyuv = true
   rtc_build_openmax_dl = true
   rtc_build_opus = true
   rtc_build_ssl = true
-  rtc_build_usrsctp = true
 
   # Disable by default.
   rtc_have_dbus_glib = false
@@ -100,19 +95,12 @@
   # http://www.openh264.org, https://www.ffmpeg.org/
   rtc_use_h264 = proprietary_codecs && !is_android && !is_ios
 
-  # Determines whether QUIC code will be built.
-  rtc_use_quic = false
-
   # FFmpeg must be initialized for |H264DecoderImpl| to work. This can be done
   # by WebRTC during |H264DecoderImpl::InitDecode| or externally. FFmpeg must
   # only be initialized once. Projects that initialize FFmpeg externally, such
   # as Chromium, must turn this flag off so that WebRTC does not also
   # initialize.
   rtc_initialize_ffmpeg = !build_with_chromium
-
-  # Build sources requiring GTK. NOTICE: This is not present in Chrome OS
-  # build environments, even if available for Chromium builds.
-  rtc_use_gtk = !build_with_chromium
 }
 
 # A second declare_args block, so that declarations within it can
diff --git a/libjingle/xmllite/BUILD.gn b/libjingle/xmllite/BUILD.gn
deleted file mode 100644
index 8495580..0000000
--- a/libjingle/xmllite/BUILD.gn
+++ /dev/null
@@ -1,54 +0,0 @@
-# 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("../../build/webrtc.gni")
-
-group("xmllite") {
-  deps = [
-    ":rtc_xmllite",
-  ]
-}
-
-source_set("rtc_xmllite") {
-  sources = [
-    "qname.cc",
-    "qname.h",
-    "xmlbuilder.cc",
-    "xmlbuilder.h",
-    "xmlconstants.cc",
-    "xmlconstants.h",
-    "xmlelement.cc",
-    "xmlelement.h",
-    "xmlnsstack.cc",
-    "xmlnsstack.h",
-    "xmlparser.cc",
-    "xmlparser.h",
-    "xmlprinter.cc",
-    "xmlprinter.h",
-  ]
-
-  deps = [
-    "../../base:rtc_base",
-  ]
-
-  if (rtc_build_expat) {
-    deps += [ "//third_party/expat" ]
-    public_deps = [
-      "//third_party/expat",
-    ]
-  }
-
-  configs += [ "../..:common_config" ]
-  public_configs = [ "../..:common_inherited_config" ]
-
-  if (is_clang) {
-    # Suppress warnings from Chrome's Clang plugins.
-    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
-    configs -= [ "//build/config/clang:find_bad_constructs" ]
-  }
-}
diff --git a/libjingle/xmpp/BUILD.gn b/libjingle/xmpp/BUILD.gn
deleted file mode 100644
index a3dfc51..0000000
--- a/libjingle/xmpp/BUILD.gn
+++ /dev/null
@@ -1,154 +0,0 @@
-# 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("../../build/webrtc.gni")
-
-group("xmpp") {
-  deps = [
-    ":rtc_xmpp",
-  ]
-}
-
-config("xmpp_warnings_config") {
-  # GN orders flags on a target before flags from configs. The default config
-  # adds these flags so to cancel them out they need to come from a config and
-  # cannot be on the target directly.
-  if (is_android) {
-    cflags = [ "-Wno-error" ]
-  }
-}
-
-config("xmpp_inherited_config") {
-  defines = [
-    "FEATURE_ENABLE_SSL",
-    "FEATURE_ENABLE_VOICEMAIL",
-  ]
-}
-
-source_set("rtc_xmpp") {
-  cflags = []
-  sources = [
-    "asyncsocket.h",
-    "chatroommodule.h",
-    "chatroommoduleimpl.cc",
-    "constants.cc",
-    "constants.h",
-    "discoitemsquerytask.cc",
-    "discoitemsquerytask.h",
-    "hangoutpubsubclient.cc",
-    "hangoutpubsubclient.h",
-    "iqtask.cc",
-    "iqtask.h",
-    "jid.cc",
-    "jid.h",
-    "module.h",
-    "moduleimpl.cc",
-    "moduleimpl.h",
-    "mucroomconfigtask.cc",
-    "mucroomconfigtask.h",
-    "mucroomdiscoverytask.cc",
-    "mucroomdiscoverytask.h",
-    "mucroomlookuptask.cc",
-    "mucroomlookuptask.h",
-    "mucroomuniquehangoutidtask.cc",
-    "mucroomuniquehangoutidtask.h",
-    "pingtask.cc",
-    "pingtask.h",
-    "plainsaslhandler.h",
-    "presenceouttask.cc",
-    "presenceouttask.h",
-    "presencereceivetask.cc",
-    "presencereceivetask.h",
-    "presencestatus.cc",
-    "presencestatus.h",
-    "prexmppauth.h",
-    "pubsub_task.cc",
-    "pubsub_task.h",
-    "pubsubclient.cc",
-    "pubsubclient.h",
-    "pubsubstateclient.cc",
-    "pubsubstateclient.h",
-    "pubsubtasks.cc",
-    "pubsubtasks.h",
-    "receivetask.cc",
-    "receivetask.h",
-    "rostermodule.h",
-    "rostermoduleimpl.cc",
-    "rostermoduleimpl.h",
-    "saslcookiemechanism.h",
-    "saslhandler.h",
-    "saslmechanism.cc",
-    "saslmechanism.h",
-    "saslplainmechanism.h",
-    "xmppauth.cc",
-    "xmppauth.h",
-    "xmppclient.cc",
-    "xmppclient.h",
-    "xmppclientsettings.h",
-    "xmppengine.h",
-    "xmppengineimpl.cc",
-    "xmppengineimpl.h",
-    "xmppengineimpl_iq.cc",
-    "xmpplogintask.cc",
-    "xmpplogintask.h",
-    "xmpppump.cc",
-    "xmpppump.h",
-    "xmppsocket.cc",
-    "xmppsocket.h",
-    "xmppstanzaparser.cc",
-    "xmppstanzaparser.h",
-    "xmpptask.cc",
-    "xmpptask.h",
-    "xmppthread.cc",
-    "xmppthread.h",
-  ]
-
-  defines = [ "FEATURE_ENABLE_SSL" ]
-
-  deps = [
-    "../../base:rtc_base",
-    "../xmllite",
-  ]
-
-  if (rtc_build_expat) {
-    deps += [ "//third_party/expat" ]
-    public_deps = [
-      "//third_party/expat",
-    ]
-  }
-
-  configs += [
-    "../..:common_config",
-    ":xmpp_warnings_config",
-  ]
-
-  public_configs = [
-    "../..:common_inherited_config",
-    ":xmpp_inherited_config",
-  ]
-
-  if (!build_with_chromium) {
-    defines += [
-      "FEATURE_ENABLE_VOICEMAIL",
-      "FEATURE_ENABLE_PSTN",
-    ]
-  }
-
-  if (is_posix && is_debug) {
-    # The Chromium build/common.gypi defines this for all posix
-    # _except_ for ios & mac.  We want it there as well, e.g.
-    # because ASSERT and friends trigger off of it.
-    defines += [ "_DEBUG" ]
-  }
-
-  if (is_clang) {
-    # Suppress warnings from Chrome's Clang plugins.
-    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
-    configs -= [ "//build/config/clang:find_bad_constructs" ]
-  }
-}
diff --git a/media/BUILD.gn b/media/BUILD.gn
deleted file mode 100644
index c245d6e..0000000
--- a/media/BUILD.gn
+++ /dev/null
@@ -1,206 +0,0 @@
-# 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("//build/config/linux/pkg_config.gni")
-import("../build/webrtc.gni")
-
-group("media") {
-  deps = [
-    ":rtc_media",
-  ]
-}
-
-config("rtc_media_defines_config") {
-  defines = [
-    "HAVE_WEBRTC_VIDEO",
-    "HAVE_WEBRTC_VOICE",
-  ]
-}
-
-config("rtc_media_warnings_config") {
-  # GN orders flags on a target before flags from configs. The default config
-  # adds these flags so to cancel them out they need to come from a config and
-  # cannot be on the target directly.
-  if (!is_win) {
-    cflags = [ "-Wno-deprecated-declarations" ]
-    cflags_cc = [ "-Wno-overloaded-virtual" ]
-  }
-}
-
-if (is_linux && rtc_use_gtk) {
-  pkg_config("gtk-lib") {
-    packages = [
-      "gobject-2.0",
-      "gthread-2.0",
-      "gtk+-2.0",
-    ]
-  }
-}
-
-source_set("rtc_media") {
-  defines = []
-  libs = []
-  deps = []
-  sources = [
-    "base/audiosource.h",
-    "base/codec.cc",
-    "base/codec.h",
-    "base/cpuid.cc",
-    "base/cpuid.h",
-    "base/cryptoparams.h",
-    "base/device.h",
-    "base/fakescreencapturerfactory.h",
-    "base/hybriddataengine.h",
-    "base/mediachannel.h",
-    "base/mediacommon.h",
-    "base/mediaconstants.cc",
-    "base/mediaconstants.h",
-    "base/mediaengine.cc",
-    "base/mediaengine.h",
-    "base/rtpdataengine.cc",
-    "base/rtpdataengine.h",
-    "base/rtpdump.cc",
-    "base/rtpdump.h",
-    "base/rtputils.cc",
-    "base/rtputils.h",
-    "base/screencastid.h",
-    "base/streamparams.cc",
-    "base/streamparams.h",
-    "base/turnutils.cc",
-    "base/turnutils.h",
-    "base/videoadapter.cc",
-    "base/videoadapter.h",
-    "base/videobroadcaster.cc",
-    "base/videobroadcaster.h",
-    "base/videocapturer.cc",
-    "base/videocapturer.h",
-    "base/videocapturerfactory.h",
-    "base/videocommon.cc",
-    "base/videocommon.h",
-    "base/videoframe.cc",
-    "base/videoframe.h",
-    "base/videoframefactory.cc",
-    "base/videoframefactory.h",
-    "base/videorenderer.h",
-    "base/videosourcebase.cc",
-    "base/videosourcebase.h",
-    "base/yuvframegenerator.cc",
-    "base/yuvframegenerator.h",
-    "devices/videorendererfactory.h",
-    "engine/nullwebrtcvideoengine.h",
-    "engine/simulcast.cc",
-    "engine/simulcast.h",
-    "engine/webrtccommon.h",
-    "engine/webrtcmediaengine.cc",
-    "engine/webrtcmediaengine.h",
-    "engine/webrtcvideocapturer.cc",
-    "engine/webrtcvideocapturer.h",
-    "engine/webrtcvideocapturerfactory.cc",
-    "engine/webrtcvideocapturerfactory.h",
-    "engine/webrtcvideodecoderfactory.h",
-    "engine/webrtcvideoencoderfactory.h",
-    "engine/webrtcvideoengine2.cc",
-    "engine/webrtcvideoengine2.h",
-    "engine/webrtcvideoframe.cc",
-    "engine/webrtcvideoframe.h",
-    "engine/webrtcvideoframefactory.cc",
-    "engine/webrtcvideoframefactory.h",
-    "engine/webrtcvoe.h",
-    "engine/webrtcvoiceengine.cc",
-    "engine/webrtcvoiceengine.h",
-    "sctp/sctpdataengine.cc",
-    "sctp/sctpdataengine.h",
-  ]
-
-  configs += [
-    "..:common_config",
-    ":rtc_media_warnings_config",
-  ]
-
-  public_configs = [ "..:common_inherited_config" ]
-
-  if (is_clang) {
-    # Suppress warnings from Chrome's Clang plugins.
-    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
-    configs -= [ "//build/config/clang:extra_warnings" ]
-    configs -= [ "//build/config/clang:find_bad_constructs" ]
-  }
-
-  if (is_win) {
-    cflags = [
-      "/wd4245",  # conversion from "int" to "size_t", signed/unsigned mismatch.
-      "/wd4267",  # conversion from "size_t" to "int", possible loss of data.
-      "/wd4389",  # signed/unsigned mismatch.
-    ]
-  }
-
-  if (rtc_build_libyuv) {
-    deps += [ "$rtc_libyuv_dir" ]
-    public_deps = [
-      "$rtc_libyuv_dir",
-    ]
-  } else {
-    # Need to add a directory normally exported by libyuv.
-    include_dirs += [ "$rtc_libyuv_dir/include" ]
-  }
-
-  if (rtc_build_usrsctp) {
-    include_dirs = [
-      # TODO(jiayl): move this into the public_configs of
-      # //third_party/usrsctp/BUILD.gn.
-      "//third_party/usrsctp/usrsctplib",
-    ]
-    deps += [ "//third_party/usrsctp" ]
-  }
-
-  if (build_with_chromium) {
-    deps += [ "../modules/video_capture:video_capture" ]
-  } else {
-    configs += [ ":rtc_media_defines_config" ]
-    public_configs += [ ":rtc_media_defines_config" ]
-    deps += [ "../modules/video_capture:video_capture_internal_impl" ]
-  }
-  if (is_linux && rtc_use_gtk) {
-    sources += [
-      "devices/gtkvideorenderer.cc",
-      "devices/gtkvideorenderer.h",
-    ]
-    public_configs += [ ":gtk-lib" ]
-  }
-  if (is_win) {
-    sources += [
-      "devices/gdivideorenderer.cc",
-      "devices/gdivideorenderer.h",
-    ]
-    libs += [
-      "d3d9.lib",
-      "gdi32.lib",
-      "strmiids.lib",
-    ]
-  }
-  if (is_mac && current_cpu == "x86") {
-    sources += [
-      "devices/carbonvideorenderer.cc",
-      "devices/carbonvideorenderer.h",
-    ]
-    libs += [ "Carbon.framework" ]
-  }
-  if (is_ios || (is_mac && current_cpu != "x86")) {
-    defines += [ "CARBON_DEPRECATED=YES" ]
-  }
-
-  deps += [
-    "..:webrtc_common",
-    "../base:rtc_base_approved",
-    "../libjingle/xmllite",
-    "../libjingle/xmpp",
-    "../p2p",
-    "../system_wrappers",
-    "../voice_engine",
-  ]
-}
diff --git a/p2p/BUILD.gn b/p2p/BUILD.gn
deleted file mode 100644
index 538781b..0000000
--- a/p2p/BUILD.gn
+++ /dev/null
@@ -1,138 +0,0 @@
-# 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("../build/webrtc.gni")
-
-group("p2p") {
-  deps = [
-    ":rtc_p2p",
-  ]
-}
-
-config("rtc_p2p_inherited_config") {
-  defines = [ "FEATURE_ENABLE_VOICEMAIL" ]
-}
-
-source_set("rtc_p2p") {
-  sources = [
-    "base/asyncstuntcpsocket.cc",
-    "base/asyncstuntcpsocket.h",
-    "base/basicpacketsocketfactory.cc",
-    "base/basicpacketsocketfactory.h",
-    "base/candidate.h",
-    "base/common.h",
-    "base/dtlstransportchannel.cc",
-    "base/dtlstransportchannel.h",
-    "base/p2pconstants.cc",
-    "base/p2pconstants.h",
-    "base/p2ptransport.cc",
-    "base/p2ptransport.h",
-    "base/p2ptransportchannel.cc",
-    "base/p2ptransportchannel.h",
-    "base/packetsocketfactory.h",
-    "base/port.cc",
-    "base/port.h",
-    "base/portallocator.cc",
-    "base/portallocator.h",
-    "base/portinterface.h",
-    "base/pseudotcp.cc",
-    "base/pseudotcp.h",
-    "base/relayport.cc",
-    "base/relayport.h",
-    "base/relayserver.cc",
-    "base/relayserver.h",
-    "base/sessiondescription.cc",
-    "base/sessiondescription.h",
-    "base/sessionid.h",
-    "base/stun.cc",
-    "base/stun.h",
-    "base/stunport.cc",
-    "base/stunport.h",
-    "base/stunrequest.cc",
-    "base/stunrequest.h",
-    "base/stunserver.cc",
-    "base/stunserver.h",
-    "base/tcpport.cc",
-    "base/tcpport.h",
-    "base/transport.cc",
-    "base/transport.h",
-    "base/transportchannel.cc",
-    "base/transportchannel.h",
-    "base/transportchannelimpl.h",
-    "base/transportcontroller.cc",
-    "base/transportcontroller.h",
-    "base/transportdescription.cc",
-    "base/transportdescription.h",
-    "base/transportdescriptionfactory.cc",
-    "base/transportdescriptionfactory.h",
-    "base/transportinfo.h",
-    "base/turnport.cc",
-    "base/turnport.h",
-    "base/turnserver.cc",
-    "base/turnserver.h",
-    "base/udpport.h",
-    "client/basicportallocator.cc",
-    "client/basicportallocator.h",
-    "client/httpportallocator.cc",
-    "client/httpportallocator.h",
-    "client/socketmonitor.cc",
-    "client/socketmonitor.h",
-  ]
-
-  defines = [ "FEATURE_ENABLE_SSL" ]
-
-  deps = [
-    "../base:rtc_base",
-    "../libjingle/xmllite",
-  ]
-
-  if (rtc_build_expat) {
-    deps += [ "//third_party/expat" ]
-    public_deps = [
-      "//third_party/expat",
-    ]
-  }
-
-  configs += [ "..:common_config" ]
-  public_configs = [
-    "..:common_inherited_config",
-    ":rtc_p2p_inherited_config",
-  ]
-
-  if (!build_with_chromium) {
-    defines += [
-      "FEATURE_ENABLE_VOICEMAIL",
-      "FEATURE_ENABLE_PSTN",
-    ]
-  }
-
-  if (rtc_use_quic) {
-    deps = [
-      "//third_party/libquic",
-    ]
-    sources += [
-      "quic/quicconnectionhelper.cc",
-      "quic/quicconnectionhelper.h",
-      "quic/quicsession.cc",
-      "quic/quicsession.h",
-      "quic/quictransport.cc",
-      "quic/quictransport.h",
-      "quic/quictransportchannel.cc",
-      "quic/quictransportchannel.h",
-      "quic/reliablequicstream.cc",
-      "quic/reliablequicstream.h",
-    ]
-    public_deps += [ "//third_party/libquic" ]
-  }
-
-  if (is_clang) {
-    # Suppress warnings from Chrome's Clang plugins.
-    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
-    configs -= [ "//build/config/clang:find_bad_constructs" ]
-  }
-}
diff --git a/pc/BUILD.gn b/pc/BUILD.gn
deleted file mode 100644
index 50bb26a..0000000
--- a/pc/BUILD.gn
+++ /dev/null
@@ -1,70 +0,0 @@
-# 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("../build/webrtc.gni")
-
-group("pc") {
-  deps = [
-    ":rtc_pc",
-  ]
-}
-
-config("rtc_pc_config") {
-  defines = [
-    "SRTP_RELATIVE_PATH",
-    "HAVE_SCTP",
-    "HAVE_SRTP",
-  ]
-}
-
-source_set("rtc_pc") {
-  defines = []
-  sources = [
-    "audiomonitor.cc",
-    "audiomonitor.h",
-    "bundlefilter.cc",
-    "bundlefilter.h",
-    "channel.cc",
-    "channel.h",
-    "channelmanager.cc",
-    "channelmanager.h",
-    "currentspeakermonitor.cc",
-    "currentspeakermonitor.h",
-    "mediamonitor.cc",
-    "mediamonitor.h",
-    "mediasession.cc",
-    "mediasession.h",
-    "mediasink.h",
-    "rtcpmuxfilter.cc",
-    "rtcpmuxfilter.h",
-    "srtpfilter.cc",
-    "srtpfilter.h",
-    "voicechannel.h",
-  ]
-
-  deps = [
-    "../base:rtc_base",
-    "../media",
-  ]
-
-  if (rtc_build_libsrtp) {
-    deps += [ "//third_party/libsrtp" ]
-  }
-
-  configs += [ "..:common_config" ]
-  public_configs = [
-    "..:common_inherited_config",
-    ":rtc_pc_config",
-  ]
-
-  if (is_clang) {
-    # Suppress warnings from Chrome's Clang plugins.
-    # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
-    configs -= [ "//build/config/clang:find_bad_constructs" ]
-  }
-}