NTP: simplify mojo connection setup

chrome/renderer/searchbox/searchbox.cc

 // Copyright 2012 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/searchbox/searchbox.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <string>
@@ skipping 226 matching lines @@
 SearchBox::SearchBox(content::RenderFrame* render_frame)
     : content::RenderFrameObserver(render_frame),
       content::RenderFrameObserverTracker<SearchBox>(render_frame),
       page_seq_no_(0),
       is_focused_(false),
       is_input_in_progress_(false),
       is_key_capture_enabled_(false),
       most_visited_items_cache_(kMaxInstantMostVisitedItemCacheSize),
       query_(),
       binding_(this) {
-  render_frame->GetRemoteAssociatedInterfaces()->GetInterface(
-      &instant_service_);
-  render_frame->GetAssociatedInterfaceRegistry()->AddInterface(
-      base::Bind(&SearchBox::Bind, base::Unretained(this)));
+  // Connect to the NTP interface in the browser.
+  chrome::mojom::NTPConnectorAssociatedPtr ntp_connector;
+  render_frame->GetRemoteAssociatedInterfaces()->GetInterface(&ntp_connector);
+  chrome::mojom::SearchBoxAssociatedPtrInfo search_box;
+  binding_.Bind(&search_box, ntp_connector.associated_group());
+  ntp_connector->Connect(
+      mojo::MakeRequest(&instant_service_, ntp_connector.associated_group()),
+      std::move(search_box));
 }
 
 SearchBox::~SearchBox() {
 }
 
 void SearchBox::LogEvent(NTPLoggingEventType event) {
   // navigation_start in ms.
   uint64_t start =
       1000 * (render_frame()->GetWebFrame()->performance().navigationStart());
   uint64_t now =
@@ skipping 198 matching lines @@
   embedded_search_request_params_ = EmbeddedSearchRequestParams();
   suggestion_ = InstantSuggestion();
   is_focused_ = false;
   is_key_capture_enabled_ = false;
   theme_info_ = ThemeBackgroundInfo();
 }
 
 void SearchBox::OnDestruct() {
   delete this;
 }