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/webui/resources/cr_elements/cr_search_field/compiled_resources2.gyp b/chrome/browser/resources/settings/settings_page/compiled_resources.gyp
similarity index 61%
copy from ui/webui/resources/cr_elements/cr_search_field/compiled_resources2.gyp
copy to chrome/browser/resources/settings/settings_page/compiled_resources.gyp
index 77b9eeadcefb33c6488c24d109d95f66e3e1eb7a..a8ad6a1a344426f635ba438ca5f644ab6a1865ed 100644
--- a/ui/webui/resources/cr_elements/cr_search_field/compiled_resources2.gyp
+++ b/chrome/browser/resources/settings/settings_page/compiled_resources.gyp
@@ -4,11 +4,8 @@
 {
   'targets': [
     {
-      'target_name': 'cr_search_field',
-      'dependencies': [
-        '<(DEPTH)/ui/webui/resources/js/compiled_resources2.gyp:assert',
-      ],
-      'includes': ['../../../../../third_party/closure_compiler/compile_js2.gypi'],

[Dan Beam, 2015/12/08 02:55:27]

btw, prefer *2 versions when possible

[stevenjb, 2015/12/08 20:07:37]

This is new to me, please send out a PSA (or direct me to it if I missed it). I
would also rather migrate all of resources/settings if possible. Thanks.

+      'target_name': 'settings_page_visibility',
+      'includes': ['../../../../../third_party/closure_compiler/compile_js.gypi'],
     },
   ],
 }