Enable swarming for some test binaries on Mac GN builds.

net/BUILD.gn

Index: net/BUILD.gn
diff --git a/net/BUILD.gn b/net/BUILD.gn
index b982b128ea055628de5b2b02af0f5f15a9f72f86..4d9107dcce35e64adfe75c0abc86b75c948fcd04 100644
--- a/net/BUILD.gn
+++ b/net/BUILD.gn
@@ -1737,7 +1737,8 @@ test("net_unittests") {
     if (is_win) {
       data += [ "$root_out_dir/net_unittests.exe.pdb" ]
     } else if (is_mac) {
-      data += [ "$root_out_dir/net_unittests.dSYM/" ]
+      # TODO(crbug.com/330301): make this conditional on mac_strip_release.
+      # data += [ "$root_out_dir/net_unittests.dSYM/" ]
     }
   }
 }