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

chrome/browser/ui/autofill/autofill_dialog_controller_impl.cc

Index: chrome/browser/ui/autofill/autofill_dialog_controller_impl.cc
diff --git a/chrome/browser/ui/autofill/autofill_dialog_controller_impl.cc b/chrome/browser/ui/autofill/autofill_dialog_controller_impl.cc
index 115e93dfd424a3afc508fc553b46ecfa969dcc87..d26d5d74258e675cb37e3c0a0329c50d4bd2706b 100644
--- a/chrome/browser/ui/autofill/autofill_dialog_controller_impl.cc
+++ b/chrome/browser/ui/autofill/autofill_dialog_controller_impl.cc
@@ -2225,7 +2225,9 @@ bool AutofillDialogControllerImpl::ShouldRepostEvent(
   return !view_->HitTestInput(popup_input_type_, event.location());
 }
 
-void AutofillDialogControllerImpl::DidSelectSuggestion(int identifier) {
+void AutofillDialogControllerImpl::DidSelectSuggestion(
+    const base::string16& value,
+    int identifier) {
   // TODO(estade): implement.
 }