[ios] Fixed some checkTypes errors in autofill_controller.js.

Moved typedefs out from anonymous function because typedefs can
only be defined at the top level, not inside functions.

R=thestig@chromium.org
BUG=487804

Review-Url: https://codereview.chromium.org/2341963006
Cr-Commit-Position: refs/heads/master@{#419423}

components/autofill/ios/browser/resources/autofill_controller.js

@@ -11,9 +11,6 @@
 // (chromium/src/components/autofill/core/common/form_data.h) for further
 // processing.
 
-/* Beginning of anonymous object. */
-(function() {
-
 /** @typedef {HTMLInputElement|HTMLTextAreaElement|HTMLSelectElement} */
 var FormControlElement;
 
@@ -46,6 +43,9 @@ var AutofillFormFieldData;
   */
 var AutofillFormData;
 
+/* Beginning of anonymous object. */
+(function() {
+
 /**
  * Namespace for this file. It depends on |__gCrWeb| having already been
  * injected.