style: Disable NSCAP_FEATURE_USE_BASE

This is a relatively small code size regression (130k on windows and
macOS, 180k on Linux), for a few high confidence improvements in
speedometer 3. See link in the bug.

If this sticks, we can actually clean up a bunch of code, and eventually
unify RefPtr and nsCOMPtr. But I want this to be on the tree for a while
before doing more aggressive refactorings / actually removing the code.

Differential Revision: https://phabricator.services.mozilla.com/D178267

components/style/gecko/media_queries.rs

@@ -74,7 +74,7 @@ impl fmt::Debug for Device {
         let mut doc_uri = nsCString::new();
         unsafe {
             bindings::Gecko_nsIURI_Debug(
-                (*self.document()).mDocumentURI.raw::<structs::nsIURI>(),
+                (*self.document()).mDocumentURI.raw(),
                 &mut doc_uri,
             )
         };