Use dom-if to hide settings pages and show explicitly.

chrome/browser/resources/settings/settings_page/compiled_resources.gyp

Index: chrome/browser/resources/settings/settings_page/compiled_resources.gyp
diff --git a/ui/keyboard/resources/compiled_resources.gyp b/chrome/browser/resources/settings/settings_page/compiled_resources.gyp
similarity index 58%
copy from ui/keyboard/resources/compiled_resources.gyp
copy to chrome/browser/resources/settings/settings_page/compiled_resources.gyp
index 4830be15b8b9372c47897435d4b4ce08558c619b..c056db36eb7a0aa4801633e7228c9d36badc2c1f 100644
--- a/ui/keyboard/resources/compiled_resources.gyp
+++ b/chrome/browser/resources/settings/settings_page/compiled_resources.gyp
@@ -4,8 +4,8 @@
 {
   'targets': [
     {
-      'target_name': 'keyboard',
-      'includes': ['../../../third_party/closure_compiler/compile_js.gypi'],
-    }
+      'target_name': 'settings_page_visibility',
+      'includes': ['../../../../../third_party/closure_compiler/compile_js.gypi'],
+    },
   ],
 }