Componentize autofill dialog common code

components/autofill.gypi

Index: components/autofill.gypi
diff --git a/components/autofill.gypi b/components/autofill.gypi
index e8c6d1531daa1d7860c50b6e69d181e890b493fe..ea16a7bc04a6a53461a056e412499c548e71b354 100644
--- a/components/autofill.gypi
+++ b/components/autofill.gypi
@@ -186,6 +186,10 @@
         'autofill/core/browser/state_names.h',
         'autofill/core/browser/suggestion.cc',
         'autofill/core/browser/suggestion.h',
+        'autofill/core/browser/ui/autofill_dialog_common.cc',
+        'autofill/core/browser/ui/autofill_dialog_common.h',
+        'autofill/core/browser/ui/autofill_dialog_types.cc',
+        'autofill/core/browser/ui/autofill_dialog_types.h',
         'autofill/core/browser/validation.cc',
         'autofill/core/browser/validation.h',
         'autofill/core/browser/wallet/real_pan_wallet_client.cc',
@@ -246,8 +250,13 @@
             'autofill/core/browser/webdata/autofill_wallet_syncable_service.h',
           ],
         }],
+        ['enable_autofill_dialog==0', {
+          'sources!': [
+            'autofill/core/browser/ui/autofill_dialog_common.cc',
+            'autofill/core/browser/ui/autofill_dialog_common.h',
+          ],
+        }],
       ],
-
       # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
       'msvs_disabled_warnings': [4267, ],
     },