message: Open visibility of some PC level framework components
  Cr-Commit-Position: refs/heads/master@{#31129}
diff: @@ -455,6 +455,7 @@ if (rtc_include_tests) {
  }
  rtc_library("stats_poller") {
  + visibility = [ "*" ]
  testonly = true
  sources = [
  "stats_poller.cc",
  @@ -599,6 +600,7 @@ rtc_library("network_quality_metrics_reporter") {
  }
  rtc_library("sdp_changer") {
  + visibility = [ "*" ]
  testonly = true
  sources = [
  "sdp/sdp_changer.cc",
  