[i18n] use Polymer data binding to change locale strings

chrome/browser/resources/chromeos/login/oobe_welcome.html

 <!-- 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. -->
 
 <link rel="import" href="chrome://resources/cr_elements/network/cr_network_icon.html">
 <link rel="import" href="chrome://resources/cr_elements/network/cr_network_select.html">
 <link rel="import" href="chrome://resources/cr_elements/network/cr_onc_types.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-flex-layout.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-iconset-svg/iron-iconset-svg.html">
@@ skipping 71 matching lines @@
     <link rel="stylesheet" href="oobe_dialog_host.css">
     <link rel="stylesheet" href="oobe_welcome.css">
     <link rel="stylesheet" href="oobe_dialog_parameters.css">
     <oobe-welcome-dialog id="welcomeScreen" role="dialog"
         i18n-values="aria-label:networkScreenGreeting"
         current-language="[[currentLanguage]]"
         on-language-button-clicked="onWelcomeSelectLanguageButtonClicked_"
         on-accessibility-button-clicked="onWelcomeAccessibilityButtonClicked_"
         on-timezone-button-clicked="onWelcomeTimezoneButtonClicked_"
         on-next-button-clicked="onWelcomeNextButtonClicked_"
-        timezone-button-visible="[[isTimezoneButtonVisible_(highlightStrength)]]"
-        debugging-link-visible="[[debuggingLinkVisible]]"
-        >
+        timezone-button-visible=
+            "[[isTimezoneButtonVisible_(highlightStrength)]]"
+        debugging-link-visible="[[debuggingLinkVisible]]">
     </oobe-welcome-dialog>
     <oobe-dialog id="languageScreen" role="dialog" hidden has-buttons
         i18n-values="aria-label:languageSectionTitle">
       <hd-iron-icon class="oobe-icon"
           icon1x="oobe-welcome-32:language" icon2x="oobe-welcome-64:language">
       </hd-iron-icon>
       <div class="header">
-        <h1 class="title" i18n-content="languageSectionTitle"></h1>
+        <h1 class="title">[[str_('languageSectionTitle', i18n_)]]</h1>
       </div>
       <div class="footer layout vertical">
         <template is="dom-if" if="[[enabled]]">
           <div id="languageDropdownContainer"
               class="flex layout center horizontal justified
                   language-selection-entry">
-            <div class="language-selection-title layout vertical center-justified"
-                i18n-content="languageDropdownTitle">
+            <div class=
+                "language-selection-title layout vertical center-justified">
+              [[str_('languageDropdownTitle', i18n_)]]
             </div>
             <oobe-i18n-dropdown id="languageSelect" items="[[languages]]"
                 on-select-item="onLanguageSelected_"
                 class="focus-on-show"
                 i18n-values="label-for-aria:languageDropdownLabel">
             </oobe-i18n-dropdown>
           </div>
           <div id="keyboardDropdownContainer"
               class="flex layout center horizontal justified
                  language-selection-entry">
-            <div class="language-selection-title layout vertical center-justified"
-                i18n-content="keyboardDropdownTitle">
+            <div class=
+                "language-selection-title layout vertical center-justified">
+              [[str_('keyboardDropdownTitle', i18n_)]]
             </div>
             <oobe-i18n-dropdown id="keyboardSelect" items="[[keyboards]]"
                 on-select-item="onKeyboardSelected_"
                 i18n-values="label-for-aria:keyboardDropdownLabel">
             </oobe-i18n-dropdown>
           </div>
         </template>
       </div>
       <div class="bottom-buttons layout horizontal end-justified">
         <oobe-text-button inverse on-tap="closeLanguageSection_">
-          <div i18n-content="oobeOKButtonText"></div>
+          <div>[[str_('oobeOKButtonText', i18n_)]]</div>
         </oobe-text-button>
       </div>
     </oobe-dialog>
     <oobe-dialog id="accessibilityScreen" role="dialog" hidden has-buttons
         i18n-values="aria-label:accessibilitySectionTitle">
       <hd-iron-icon class="oobe-icon"
           icon1x="oobe-welcome-32:accessibility"
           icon2x="oobe-welcome-64:accessibility">
       </hd-iron-icon>
       <div class="header">
-        <h1 class="title" i18n-content="accessibilitySectionTitle"></h1>
-        <div class="subtitle" i18n-content="accessibilitySectionHint"></div>
+        <h1 class="title">[[str_('accessibilitySectionTitle', i18n_)]]</h1>
+        <div class="subtitle">[[str_('accessibilitySectionHint', i18n_)]]</div>
       </div>
       <div class="footer layout vertical">
         <oobe-a11y-option checked="[[a11yStatus.spokenFeedbackEnabled]]"
             on-change="onA11yOptionChanged_"
             chrome-message="enableSpokenFeedback"
             i18n-values="label-for-aria:spokenFeedbackOption"
             class="focus-on-show">
-          <span class="title" i18n-content="spokenFeedbackOption"></span>
-          <span class="checked-value" i18n-content="spokenFeedbackOptionOn">
+          <span class="title">[[str_('spokenFeedbackOption', i18n_)]]</span>
+          <span class="checked-value">
+            [[str_('spokenFeedbackOptionOn', i18n_)]]
           </span>
-          <span class="unchecked-value" i18n-content="spokenFeedbackOptionOff">
+          <span class="unchecked-value">
+            [[str_('spokenFeedbackOptionOff', i18n_)]]
           </span>
         </oobe-a11y-option>
         <oobe-a11y-option checked="[[a11yStatus.largeCursorEnabled]]"
             on-change="onA11yOptionChanged_"
             chrome-message="enableLargeCursor"
             i18n-values="label-for-aria:largeCursorOption">
-          <span class="title" i18n-content="largeCursorOption"></span>
-          <span class="checked-value" i18n-content="largeCursorOptionOn">
+          <span class="title">[[str_('largeCursorOption', i18n_)]]</span>
+          <span class="checked-value">
+            [[str_('largeCursorOptionOn', i18n_)]]
           </span>
-          <span class="unchecked-value" i18n-content="largeCursorOptionOff">
+          <span class="unchecked-value">
+            [[str_('largeCursorOptionOff', i18n_)]]
           </span>
         </oobe-a11y-option>
         <oobe-a11y-option checked="[[a11yStatus.highContrastEnabled]]"
             on-change="onA11yOptionChanged_"
             chrome-message="enableHighContrast"
             i18n-values="label-for-aria:highContrastOption">
-          <span class="title" i18n-content="highContrastOption"></span>
-          <span class="checked-value" i18n-content="highContrastOptionOn">
+          <span class="title">[[str_('highContrastOption', i18n_)]]</span>
+          <span class="checked-value">
+            [[str_('highContrastOptionOn', i18n_)]]
           </span>
-          <span class="unchecked-value" i18n-content="highContrastOptionOff">
+          <span class="unchecked-value">
+            [[str_('highContrastOptionOff', i18n_)]]
           </span>
         </oobe-a11y-option>
         <oobe-a11y-option checked="[[a11yStatus.screenMagnifierEnabled]]"
             on-change="onA11yOptionChanged_"
             chrome-message="enableScreenMagnifier"
             i18n-values="label-for-aria:screenMagnifierOption">
-          <span class="title" i18n-content="screenMagnifierOption"></span>
-          <span class="checked-value" i18n-content="screenMagnifierOptionOn">
+          <span class="title">[[str_('screenMagnifierOption', i18n_)]]</span>
+          <span class="checked-value">
+            [[str_('screenMagnifierOptionOn', i18n_)]]
           </span>
-          <span class="unchecked-value" i18n-content="screenMagnifierOptionOff">
+          <span class="unchecked-value">
+            [[str_('screenMagnifierOptionOff', i18n_)]]
           </span>
         </oobe-a11y-option>
         <oobe-a11y-option checked="[[a11yStatus.virtualKeyboardEnabled]]"
             on-change="onA11yOptionChanged_"
             chrome-message="enableVirtualKeyboard"
             i18n-values="label-for-aria:virtualKeyboardOption">
-          <span class="title" i18n-content="virtualKeyboardOption"></span>
-          <span class="checked-value" i18n-content="virtualKeyboardOptionOn">
+          <span class="title">[[str_('virtualKeyboardOption', i18n_)]]</span>
+          <span class="checked-value">
+            [[str_('virtualKeyboardOptionOn', i18n_)]]
           </span>
-          <span class="unchecked-value" i18n-content="virtualKeyboardOptionOff">
+          <span class="unchecked-value">
+            [[str_('virtualKeyboardOptionOff', i18n_)]]
           </span>
         </oobe-a11y-option>
       </div>
       <div class="bottom-buttons layout horizontal end-justified">
         <oobe-text-button inverse on-tap="closeAccessibilitySection_">
-          <div i18n-content="oobeOKButtonText"></div>
+          <div>[[str_('oobeOKButtonText', i18n_)]]</div>
         </oobe-text-button>
       </div>
     </oobe-dialog>
     <oobe-dialog id="timezoneScreen" role="dialog" hidden has-buttons
         i18n-values="aria-label:timezoneSectionTitle">
       <hd-iron-icon class="oobe-icon"
           icon1x="oobe-welcome-32:timezone" icon2x="oobe-welcome-64:timezone">
       </hd-iron-icon>
       <div class="header">
-        <h1 class="title" i18n-content="timezoneSectionTitle"></h1>
+        <h1 class="title">[[str_('timezoneSectionTitle', i18n_)]]</h1>
       </div>
       <div class="footer layout vertical">
         <div class="flex layout center horizontal justified
               timezone-selection-entry">
-          <div class="timezone-selection-title layout vertical center-justified"
-              i18n-content="timezoneDropdownTitle">
+          <div class=
+              "timezone-selection-title layout vertical center-justified">
+            [[str_('timezoneDropdownTitle', i18n_)]]
           </div>
           <oobe-i18n-dropdown id="timezoneSelect" items="[[timezones]]"
               on-select-item="onTimezoneSelected_"
               i18n-values="label-for-aria:timezoneDropdownLabel"
               class="focus-on-show">
           </oobe-i18n-dropdown>
         </div>
       </div>
       <div class="bottom-buttons layout horizontal end-justified">
         <oobe-text-button inverse on-tap="closeTimezoneSection_">
-          <div i18n-content="oobeOKButtonText"></div>
+          <div>[[str_('oobeOKButtonText', i18n_)]]</div>
         </oobe-text-button>
       </div>
     </oobe-dialog>
     <oobe-dialog id="networkSelectionScreen" role="dialog" hidden has-buttons
         i18n-values="aria-label:networkSectionTitle"
         on-show-dialog="onNetworkSelectionScreenShown_">
       <hd-iron-icon class="oobe-icon"
           icon1x="oobe-welcome-32:wifi" icon2x="oobe-welcome-64:wifi">
       </hd-iron-icon>
       <div class="header">
-        <h1 class="title" i18n-content="networkSectionTitle"></h1>
-        <div class="subtitle" i18n-content="networkSectionHint"></div>
+        <h1 class="title">[[str_('networkSectionTitle', i18n_)]]</h1>
+        <div class="subtitle">[[str_('networkSectionHint', i18n_)]]</div>
       </div>
       <div class="footer layout vertical">
         <cr-network-select id="networkSelect"
             on-default-network-changed="onDefaultNetworkChanged_"
             on-network-item-selected="onNetworkListNetworkItemSelected_"
             on-custom-item-selected="onNetworkListCustomItemSelected_"
             custom-items="[[getNetworkCustomItems_(isConnected_)]]"
             no-bottom-scroll-border
             class="focus-on-show">
         </cr-network-select>
       </div>
       <div class="bottom-buttons layout horizontal justified">
         <oobe-back-button on-tap="onNetworkSelectionBackButtonPressed_">
         </oobe-back-button>
         <oobe-next-button disabled="[[!isConnected_]]"
             on-tap="onSelectedNetworkConnected_">
         </oobe-next-button>
       </div>
     </oobe-dialog>
   </template>
 </dom-module>