Add "previewing on hover" support for single-field autocomplete input

components/autofill/core/browser/autofill_external_delegate.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/core/browser/autofill_external_delegate.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/autocomplete_history_manager.h"
 #include "components/autofill/core/browser/autofill_driver.h"
 #include "components/autofill/core/browser/autofill_manager.h"
@@ skipping 144 matching lines @@
 }
 
 void AutofillExternalDelegate::OnPopupHidden() {
 }
 
 bool AutofillExternalDelegate::ShouldRepostEvent(const ui::MouseEvent& event) {
   NOTREACHED();
   return true;
 }
 
-void AutofillExternalDelegate::DidSelectSuggestion(int identifier) {
+void AutofillExternalDelegate::DidSelectSuggestion(
+    const base::string16& value,
+    int identifier) {
   ClearPreviewedForm();
 
   // Only preview the data if it is a profile.
   if (identifier > 0)
     FillAutofillFormData(identifier, true);
+  else if (identifier == POPUP_ITEM_ID_AUTOCOMPLETE_ENTRY)
+    autofill_driver_->RendererShouldPreviewFieldWithValue(value);
 }
 
 void AutofillExternalDelegate::DidAcceptSuggestion(const base::string16& value,
                                                    int identifier) {
   if (identifier == POPUP_ITEM_ID_AUTOFILL_OPTIONS) {
     // User selected 'Autofill Options'.
     autofill_manager_->ShowAutofillSettings();
   } else if (identifier == POPUP_ITEM_ID_CLEAR_FORM) {
     // User selected 'Clear form'.
     autofill_driver_->RendererShouldClearFilledForm();
   } else if (identifier == POPUP_ITEM_ID_PASSWORD_ENTRY) {
     bool success = password_autofill_manager_.DidAcceptAutofillSuggestion(
         autofill_query_field_, value);
     DCHECK(success);
   } else if (identifier == POPUP_ITEM_ID_DATALIST_ENTRY) {
     autofill_driver_->RendererShouldAcceptDataListSuggestion(value);
   } else if (identifier == POPUP_ITEM_ID_AUTOCOMPLETE_ENTRY) {
     // User selected an Autocomplete, so we fill directly.
-    autofill_driver_->RendererShouldSetNodeText(value);
+    autofill_driver_->RendererShouldFillFieldWithValue(value);
   } else {
     FillAutofillFormData(identifier, false);
   }
 
   autofill_manager_->delegate()->HideAutofillPopup();
 }
 
 void AutofillExternalDelegate::RemoveSuggestion(const base::string16& value,
                                                 int identifier) {
   if (identifier > 0) {
@@ skipping 144 matching lines @@
   // Set the values that all datalist elements share.
   autofill_icons->insert(autofill_icons->begin(),
                          data_list_values_.size(),
                          base::string16());
   autofill_unique_ids->insert(autofill_unique_ids->begin(),
                               data_list_values_.size(),
                               POPUP_ITEM_ID_DATALIST_ENTRY);
 }
 
 }  // namespace autofill