WIP Component build of autofill

components/autofill/common/autofill_pref_names.h

Index: components/autofill/common/autofill_pref_names.h
diff --git a/components/autofill/common/autofill_pref_names.h b/components/autofill/common/autofill_pref_names.h
index c67ac1a8dbd8608c71d7210bcb3f97a21940dc08..5b5a4d9e26406b3b78d43382286668a98100dcc7 100644
--- a/components/autofill/common/autofill_pref_names.h
+++ b/components/autofill/common/autofill_pref_names.h
@@ -5,13 +5,15 @@
 #ifndef COMPONENTS_AUTOFILL_COMMON_AUTOFILL_PREF_NAMES_H_
 #define COMPONENTS_AUTOFILL_COMMON_AUTOFILL_PREF_NAMES_H_
 
+#include "components/autofill/common/autofill_export.h"
+
 namespace autofill {
 namespace prefs {
 
 // Alphabetical list of preference names specific to the Autofill
 // component. Keep alphabetized, and document each in the .cc file.
 extern const char kAutofillAuxiliaryProfilesEnabled[];
-extern const char kAutofillEnabled[];
+AUTOFILL_EXPORT extern const char kAutofillEnabled[];
 extern const char kAutofillNegativeUploadRate[];
 extern const char kAutofillPositiveUploadRate[];
 extern const char kPasswordGenerationEnabled[];