As part of JDK-8247976, the home of the HotSpot Style Guide was changed from the OpenJDK wiki to jdk/jdk/doc/hotspot-style.{md,html}. However, there are a couple of subpages of the main wiki page that have not been dealt with. Discussion during the review of JDK-8247976 indicated the information in these pages should be similarly moved.
The page "Naming HotSpot JTReg Tests" can just be summarized into a small addition to hotspot-style.md.
The page "Native/Unit Test Development Guidelines" is pretty substantial (it is currently ~1/2 the number of lines of the main Style Guide), and probably deserves it's own file.