Modifying Autofill Agent to use synthetic form (i.e., formless elements) when no form is present on…

components/autofill/content/renderer/form_cache.cc

 // Copyright 2013 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 "components/autofill/content/renderer/form_cache.h"
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/stl_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 310 matching lines @@
     replacements.push_back(base::UTF8ToUTF16(field.signature));
     replacements.push_back(base::UTF8ToUTF16(form.signature));
     const base::string16 title = l10n_util::GetStringFUTF16(
         IDS_AUTOFILL_SHOW_PREDICTIONS_TITLE, replacements, nullptr);
     element.setAttribute("title", WebString(title));
   }
 
   return true;
 }
 
+FormData FormCache::GetSyntheticForm() {
+  return synthetic_form_;
+}
+
 size_t FormCache::ScanFormControlElements(
     const std::vector<WebFormControlElement>& control_elements,
     bool log_deprecation_messages) {
   size_t num_editable_elements = 0;
   for (size_t i = 0; i < control_elements.size(); ++i) {
     const WebFormControlElement& element = control_elements[i];
 
     if (log_deprecation_messages)
       LogDeprecationMessages(element);
 
@@ skipping 23 matching lines @@
       const WebInputElement* input_element = toWebInputElement(&element);
       if (form_util::IsCheckableElement(input_element)) {
         initial_checked_state_.insert(
             std::make_pair(*input_element, input_element->isChecked()));
       }
     }
   }
 }
 
 }  // namespace autofill