GN: Tighten up test target visibility + refactorings

webrtc/sdk/BUILD.gn

Index: webrtc/sdk/BUILD.gn
diff --git a/webrtc/sdk/BUILD.gn b/webrtc/sdk/BUILD.gn
index 721580d872875326f58ddfc2a29a58177a7f72f7..a352f9c65a5d078db6a7c4ae0b6b0e95334a631a 100644
--- a/webrtc/sdk/BUILD.gn
+++ b/webrtc/sdk/BUILD.gn
@@ -263,6 +263,13 @@ if (is_ios || is_mac) {
   if (rtc_include_tests) {
     rtc_source_set("rtc_sdk_peerconnection_objc_unittests") {
       testonly = true
+
+      # Skip restricting visibility on mobile platforms since the tests on those
+      # gets additional generated targets which would require many lines here to
+      # cover (which would be confusing to read and hard to maintain).
+      if (!is_android && !is_ios) {
+        visibility = [ "//webrtc:rtc_unittests" ]
+      }
       sources = [
         "objc/Framework/UnitTests/RTCConfigurationTest.mm",
         "objc/Framework/UnitTests/RTCDataChannelConfigurationTest.mm",