Don't ask the browser for Autofill suggestions for non-autofillable form fields.

chrome/renderer/autofill/form_autofill_util.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/autofill/form_autofill_util.h"
 
 #include <map>
 
 #include "base/callback_old.h"
 #include "base/logging.h"
@@ skipping 763 matching lines @@
 
   // Copy the created FormFields into the resulting FormData object.
   for (ScopedVector<FormField>::const_iterator iter = form_fields.begin();
        iter != form_fields.end(); ++iter) {
     form->fields.push_back(**iter);
   }
 
   return true;
 }
 
-bool FindFormAndFieldForFormControlElement(const WebFormControlElement& element,
-                                           FormData* form,
-                                           webkit_glue::FormField* field) {
+bool FindFormAndFieldForInputElement(const WebInputElement& element,
+                                     FormData* form,
+                                     webkit_glue::FormField* field,
+                                     RequirementsMask requirements) {
   if (!IsAutofillableElement(element))
     return false;
 
   const WebFormElement form_element = element.form();
   if (form_element.isNull())
     return false;
 
   ExtractMask extract_mask =
       static_cast<ExtractMask>(EXTRACT_VALUE | EXTRACT_OPTIONS);
   return WebFormElementToFormData(form_element,
                                   element,
-                                  REQUIRE_NONE,
+                                  requirements,
                                   extract_mask,
                                   form,
                                   field);
 }
 
 void FillForm(const FormData& form, const WebInputElement& element) {
   WebFormElement form_element = element.form();
   if (form_element.isNull())
     return;
 
@@ skipping 74 matching lines @@
       continue;
 
     if (input_element->isAutofilled())
       return true;
   }
 
   return false;
 }
 
 }  // namespace autofill