move gconf config inside use_gconf block

chrome/browser/ui/libgtk2ui/BUILD.gn

Index: chrome/browser/ui/libgtk2ui/BUILD.gn
diff --git a/chrome/browser/ui/libgtk2ui/BUILD.gn b/chrome/browser/ui/libgtk2ui/BUILD.gn
index 9ded542b68012c12762327826cb0c86988c09480..c4295b9d03546f5751b17607e322d3318376e8ce 100644
--- a/chrome/browser/ui/libgtk2ui/BUILD.gn
+++ b/chrome/browser/ui/libgtk2ui/BUILD.gn
@@ -61,11 +61,10 @@ component("libgtk2ui") {
       "gconf_listener.cc",
       "gconf_listener.h",
     ]
+    configs += [ "//build/config/linux:gconf" ]
   }
   defines = [ "LIBGTK2UI_IMPLEMENTATION" ]
 
-  configs += [ "//build/config/linux:gconf" ]
-
   if (use_cups) {
     configs += [ "//printing:cups" ]
   }