WIP Component build of autofill

components/autofill/browser/autofill_external_delegate.h

Index: components/autofill/browser/autofill_external_delegate.h
diff --git a/components/autofill/browser/autofill_external_delegate.h b/components/autofill/browser/autofill_external_delegate.h
index 57a4b8e3faa84410ac8b440fa1239258191435fb..1d7ff603af919ef34adcc0fc4fc3d4600e11c4f7 100644
--- a/components/autofill/browser/autofill_external_delegate.h
+++ b/components/autofill/browser/autofill_external_delegate.h
@@ -12,12 +12,17 @@
 #include "base/string16.h"
 #include "components/autofill/browser/autofill_popup_delegate.h"
 #include "components/autofill/browser/password_autofill_manager.h"
+#include "components/autofill/common/autofill_export.h"
 #include "components/autofill/common/form_data.h"
 #include "components/autofill/common/form_field_data.h"
 #include "components/autofill/common/password_form_fill_data.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
+
+#define EXPORT_WEB_CONTENT_USER_DATA
 #include "content/public/browser/web_contents_user_data.h"
+#undef EXPORT_WEB_CONTENT_USER_DATA
+
 #include "ui/gfx/rect.h"
 
 namespace gfx {
@@ -37,7 +42,7 @@ class AutofillManager;
 // this logic. See http://crbug.com/51644
 
 // Delegate for in-browser Autocomplete and Autofill display and selection.
-class AutofillExternalDelegate
+class AUTOFILL_EXPORT AutofillExternalDelegate
     : public content::WebContentsUserData<AutofillExternalDelegate>,
       public content::NotificationObserver,
       public AutofillPopupDelegate {
@@ -109,6 +114,12 @@ class AutofillExternalDelegate
   friend class content::WebContentsUserData<AutofillExternalDelegate>;
   AutofillExternalDelegate(content::WebContents* web_contents,
                            AutofillManager* autofill_manager);
+
+  // Never use this constructor. It's only for preventing compiling errors (
+  // WebContentsUserData requires a constructor with a single WebContents
+  // parameter).
+  explicit AutofillExternalDelegate(content::WebContents* web_contents);
+
   virtual ~AutofillExternalDelegate();
 
   content::WebContents* web_contents() { return web_contents_; }