Remove negative include rules from webrtc_nonparallel_tests target

webrtc/BUILD.gn

Index: webrtc/BUILD.gn
diff --git a/webrtc/BUILD.gn b/webrtc/BUILD.gn
index be0e88e442a6ac0d24575a07900574ad31a31793..c2b9186a1b7aa73162bf5f27ad2c9369587af2b7 100644
--- a/webrtc/BUILD.gn
+++ b/webrtc/BUILD.gn
@@ -694,9 +694,6 @@ if (rtc_include_tests) {
     public_configs = [ ":common_inherited_config" ]
     sources = [
       "base/nullsocketserver_unittest.cc",
-      "base/physicalsocketserver_unittest.cc",
-      "base/socket_unittest.cc",
-      "base/socket_unittest.h",
       "base/socketaddress_unittest.cc",
       "base/virtualsocket_unittest.cc",
     ]
@@ -706,16 +703,16 @@ if (rtc_include_tests) {
       "//testing/gtest",
     ]
     if (is_win) {
-      sources += [ "base/win32socketserver_unittest.cc" ]
-
       # TODO(ronghuawu): Fix TestUdpReadyToSendIPv6 on windows bot then reenable
       # these tests.
+      # sources += [ "base/win32socketserver_unittest.cc" ]
+    } else {
       # TODO(pbos): Move test disabling to ifdefs within the test files instead
       # of here.
-      sources -= [
+      sources += [
         "base/physicalsocketserver_unittest.cc",
         "base/socket_unittest.cc",
-        "base/win32socketserver_unittest.cc",
+        "base/socket_unittest.h",
       ]
     }
     if (is_android) {