.mailmap: Update my address again

I joined Google's Chrome OS graphics team.
diff --git a/.mailmap b/.mailmap
index 469599e..756b066 100644
--- a/.mailmap
+++ b/.mailmap
@@ -88,10 +88,11 @@
 Carl-Philip Hänsch <cphaensch@googlemail.com> Carl-Philip Haensch <carli@carli-laptop.(none)>
 Carl-Philip Hänsch <cphaensch@googlemail.com> Carl-Philip Haensch <Carl-Philip.Haensch@mailbox.tu-dresden.de>
 
-Chad Versace <chad@kiwitree.net> <chad@chad-versace.us>
-Chad Versace <chad@kiwitree.net> <Chad Versace chad@chad-versace.us>
-Chad Versace <chad@kiwitree.net> <chad.versace@intel.com>
-Chad Versace <chad@kiwitree.net> <chad.versace@linux.intel.com>
+Chad Versace <chadversary@chromium.org> <chad@kiwitree.net>
+Chad Versace <chadversary@chromium.org> <chad@chad-versace.us>
+Chad Versace <chadversary@chromium.org> <Chad Versace chad@chad-versace.us>
+Chad Versace <chadversary@chromium.org> <chad.versace@intel.com>
+Chad Versace <chadversary@chromium.org> <chad.versace@linux.intel.com>
 
 Chia-I Wu <olvaffe@gmail.com> <olv@lunarg.com>
 Chia-I Wu <olvaffe@gmail.com> Chia-Wu <olvaffe@gmail.com>