Bug 1667915 - Separate marker category from marker options - r=gregtatum

The `category.WithOptions(...)` syntax was a bit strange and difficult to explain.

Now the category and options are separate parameters. Default options can be specified with `MarkerOptions{}` or just `{}`.

As a special case, defaulted-NoPayload functions don't need `<>`, and defaulted-NoPayload functions and macros don't even need `{}` for default options, e.g.:
`profiler_add_marker("name", OTHER); PROFILER_MARKER_UNTYPED("name", OTHER);`

Differential Revision: https://phabricator.services.mozilla.com/D91680

docshell/base/nsDocShell.cpp

@@ -7950,7 +7950,7 @@ nsresult nsDocShell::CreateContentViewer(const nsACString& aContentType,
         BasePrincipal::Cast(thisPrincipal)->GetURI(getter_AddRefs(prinURI));
         nsPrintfCString marker("Iframe loaded in background: %s",
                                prinURI->GetSpecOrDefault().get());
-        PROFILER_MARKER_TEXT("Background Iframe", DOM, marker);
+        PROFILER_MARKER_TEXT("Background Iframe", DOM, {}, marker);
 #endif
         SetBackgroundLoadIframe();
       }