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

components/autofill/content/browser/autofill_driver_impl.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/browser/autofill_driver_impl.h"
 
 #include "base/command_line.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "components/autofill/content/common/autofill_messages.h"
 #include "components/autofill/core/browser/autofill_external_delegate.h"
@@ skipping 154 matching lines @@
 }
 
 void AutofillDriverImpl::RendererShouldSetNodeText(
     const base::string16& value) {
   if (!RendererIsAvailable())
     return;
   content::RenderViewHost* host = web_contents()->GetRenderViewHost();
   host->Send(new AutofillMsg_SetNodeText(host->GetRoutingID(), value));
 }
 
+void AutofillDriverImpl::RendererShouldPreviewAutoCompleteNode(
+    const base::string16& value) {
+  if (!RendererIsAvailable())
+    return;
+  content::RenderViewHost* host = web_contents()->GetRenderViewHost();
+  host->Send(new AutofillMsg_PreviewAutoCompleteNode(host->GetRoutingID(),
+                                                     value));
+}
+
 bool AutofillDriverImpl::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(AutofillDriverImpl, message)
     IPC_MESSAGE_FORWARD(AutofillHostMsg_FormsSeen, autofill_manager_.get(),
                         AutofillManager::OnFormsSeen)
     IPC_MESSAGE_FORWARD(AutofillHostMsg_FormSubmitted, autofill_manager_.get(),
                         AutofillManager::OnFormSubmitted)
     IPC_MESSAGE_FORWARD(AutofillHostMsg_TextFieldDidChange,
                         autofill_manager_.get(),
                         AutofillManager::OnTextFieldDidChange)
@@ skipping 46 matching lines @@
 void AutofillDriverImpl::NavigationEntryCommitted(
     const content::LoadCommittedDetails& load_details) {
   autofill_manager_->delegate()->HideAutofillPopup();
 }
 
 void AutofillDriverImpl::WasHidden() {
   autofill_manager_->delegate()->HideAutofillPopup();
 }
 
 }  // namespace autofill