Add a Physical Web omnibox autocomplete provider

chrome/browser/autocomplete/chrome_autocomplete_provider_client.cc

 // Copyright 2014 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/browser/autocomplete/chrome_autocomplete_provider_client.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 131 matching lines @@
 ChromeAutocompleteProviderClient::GetKeywordExtensionsDelegate(
     KeywordProvider* keyword_provider) {
 #if defined(ENABLE_EXTENSIONS)
   return base::WrapUnique(
       new KeywordExtensionsDelegateImpl(profile_, keyword_provider));
 #else
   return nullptr;
 #endif
 }
 
+PhysicalWebDataSource*
+ChromeAutocompleteProviderClient::GetPhysicalWebDataSource() {
+  return nullptr;
+}
+
 std::string ChromeAutocompleteProviderClient::GetAcceptLanguages() const {
   return profile_->GetPrefs()->GetString(prefs::kAcceptLanguages);
 }
 
 std::string
 ChromeAutocompleteProviderClient::GetEmbedderRepresentationOfAboutScheme() {
   return content::kChromeUIScheme;
 }
 
 std::vector<base::string16> ChromeAutocompleteProviderClient::GetBuiltinURLs() {
@@ skipping 74 matching lines @@
   image_service->Prefetch(url);
 }
 
 void ChromeAutocompleteProviderClient::OnAutocompleteControllerResultReady(
     AutocompleteController* controller) {
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_AUTOCOMPLETE_CONTROLLER_RESULT_READY,
       content::Source<AutocompleteController>(controller),
       content::NotificationService::NoDetails());
 }