Add empty list indicator for Physical Web WebUI

chrome/browser/ui/webui/physical_web/physical_web_ui.cc

 // Copyright 2016 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/ui/webui/physical_web/physical_web_ui.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/metrics/user_metrics.h"
 #include "chrome/browser/browser_process_impl.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/url_constants.h"
 #include "components/grit/components_resources.h"
 #include "components/physical_web/data_source/physical_web_data_source.h"
 #include "components/physical_web/webui/physical_web_base_message_handler.h"
 #include "components/physical_web/webui/physical_web_ui_constants.h"
 #include "components/strings/grit/components_strings.h"
 #include "content/public/browser/web_ui_data_source.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
 namespace {
 
 content::WebUIDataSource* CreatePhysicalWebHTMLSource() {
   content::WebUIDataSource* source = content::WebUIDataSource::Create(
       chrome::kChromeUIPhysicalWebHost);
 
   source->AddLocalizedString(physical_web_ui::kTitle,
                              IDS_PHYSICAL_WEB_UI_TITLE);
+  source->AddLocalizedString(physical_web_ui::kEmptyMessage,
+                             IDS_PHYSICAL_WEB_UI_EMPTY_MESSAGE);
   source->SetJsonPath("strings.js");
   source->AddResourcePath(physical_web_ui::kPhysicalWebJS,
                           IDR_PHYSICAL_WEB_UI_JS);
   source->AddResourcePath(physical_web_ui::kPhysicalWebCSS,
                           IDR_PHYSICAL_WEB_UI_CSS);
   source->SetDefaultResource(IDR_PHYSICAL_WEB_UI_HTML);
   return source;
 }
 
 // Implements all MessageHandler core functionality.  This is extends the
@@ skipping 42 matching lines @@
 
 PhysicalWebUI::PhysicalWebUI(content::WebUI* web_ui)
     : WebUIController(web_ui) {
   content::WebUIDataSource::Add(Profile::FromWebUI(web_ui),
                                 CreatePhysicalWebHTMLSource());
   web_ui->AddMessageHandler(base::MakeUnique<PhysicalWebMessageHandler>());
   base::RecordAction(base::UserMetricsAction("PhysicalWeb.WebUI.Open"));
 }
 
 PhysicalWebUI::~PhysicalWebUI() = default;