All firefox-specific old-style capabilities begin with firefox_

Of course, the protocol handshake is flawed in the way that it
constructs the W3C capabilities, since it doesn't transform
some of the common objects (timeouts), and it automatically
forwards known-bad capabilities (eg. `firefox.*` ones) to the
remote end. Worse, it draws no distinction between required
and desired capabilities, but it turns out that noone on the
planet other than me cared, so I guess that's okay.

Author: shs96c

java/client/src/org/openqa/selenium/remote/ProtocolHandshake.java

@@ -141,8 +141,7 @@ private void amendW3cParameters(
         .flatMap(Collection::stream)
         .filter(entry ->
                     ("browserName".equals(entry.getKey()) && FIREFOX.equals(entry.getValue())) ||
-                    "firefox_binary".equals(entry.getKey()) ||
-                    "firefox_profile".equals(entry.getKey()) ||
+                    entry.getKey().startsWith("firefox_") ||
                     entry.getKey().startsWith("moz:"))
         .distinct()
         .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));