Update chrome://device-emulator with newer Polymer guidelines

chrome/browser/ui/webui/chromeos/emulator/device_emulator_ui.cc

 // Copyright 2015 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/chromeos/emulator/device_emulator_ui.h"
 
-#include "base/strings/string_number_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/chromeos/emulator/device_emulator_message_handler.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
 #include "content/public/browser/web_ui_data_source.h"
 #include "grit/browser_resources.h"
 #include "grit/generated_resources.h"
 
 namespace {
 
 // Create data source for chrome://device-emulator/.
 content::WebUIDataSource* CreateDeviceEmulatorUIDataSource() {
   content::WebUIDataSource* html =
       content::WebUIDataSource::Create(chrome::kChromeUIDeviceEmulatorHost);
 
-  html->SetJsonPath("strings.js");
+  // Add resources.
+  html->AddResourcePath("audio_settings.html",
+                        IDR_DEVICE_EMULATOR_AUDIO_SETTINGS_HTML);
+  html->AddResourcePath("audio_settings.js",
+                        IDR_DEVICE_EMULATOR_AUDIO_SETTINGS_JS);
+  html->AddResourcePath("battery_settings.html",
+                        IDR_DEVICE_EMULATOR_BATTERY_SETTINGS_HTML);
+  html->AddResourcePath("battery_settings.js",
+                        IDR_DEVICE_EMULATOR_BATTERY_SETTINGS_JS);
+  html->AddResourcePath("bluetooth_settings.html",
+                        IDR_DEVICE_EMULATOR_BLUETOOTH_SETTINGS_HTML);
+  html->AddResourcePath("bluetooth_settings.js",
+                        IDR_DEVICE_EMULATOR_BLUETOOTH_SETTINGS_JS);
+  html->AddResourcePath("icons.html", IDR_DEVICE_EMULATOR_ICONS_HTML);
+  html->AddResourcePath("device_emulator_pages.html",
+                        IDR_DEVICE_EMULATOR_PAGES_HTML);
+  html->AddResourcePath("device_emulator_pages.js",
+                        IDR_DEVICE_EMULATOR_PAGES_JS);
 
-  // Add resources.
-  html->AddResourcePath("device_emulator.css", IDR_DEVICE_EMULATOR_CSS);
-  html->AddResourcePath("device_emulator.js", IDR_DEVICE_EMULATOR_JS);
-  html->AddResourcePath("shared_styles.css",
-                        IDR_DEVICE_EMULATOR_SHARED_STYLES_CSS);
-  html->AddResourcePath("audio_settings.html", IDR_AUDIO_SETTINGS_HTML);
-  html->AddResourcePath("audio_settings.js", IDR_AUDIO_SETTINGS_JS);
-  html->AddResourcePath("battery_settings.html", IDR_BATTERY_SETTINGS_HTML);
-  html->AddResourcePath("battery_settings.js", IDR_BATTERY_SETTINGS_JS);
-  html->AddResourcePath("bluetooth_settings.html", IDR_BLUETOOTH_SETTINGS_HTML);
-  html->AddResourcePath("bluetooth_settings.js", IDR_BLUETOOTH_SETTINGS_JS);
+  html->AddResourcePath("shared_styles.html",
+                        IDR_DEVICE_EMULATOR_SHARED_STYLES_HTML);
+
   html->SetDefaultResource(IDR_DEVICE_EMULATOR_HTML);
 
   return html;
 }
 
 }  // namespace
 
 DeviceEmulatorUI::DeviceEmulatorUI(content::WebUI* web_ui)
     : WebUIController(web_ui) {
-  chromeos::DeviceEmulatorMessageHandler* handler =
-      new chromeos::DeviceEmulatorMessageHandler();
-  handler->Init();
-  web_ui->AddMessageHandler(handler);
+  web_ui->AddMessageHandler(new chromeos::DeviceEmulatorMessageHandler());
 
   content::WebUIDataSource::Add(web_ui->GetWebContents()->GetBrowserContext(),
                                 CreateDeviceEmulatorUIDataSource());
 }
 
 DeviceEmulatorUI::~DeviceEmulatorUI() {
 }