MD Settings: Manage search engines, localizing/adding strings.

chrome/browser/resources/settings/search_engines_page/search_engines_page.html

 <link rel="import" href="chrome://resources/html/polymer_config.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/polymer/polymer.html">
 <link rel="import" href="chrome://resources/html/cr.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_expand_button/cr_expand_button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-collapse/iron-collapse.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://md-settings/search_engines_page/search_engines_browser_proxy.html">
 <link rel="import" href="chrome://md-settings/search_engines_page/search_engine_dialog.html">
 <link rel="import" href="chrome://md-settings/search_engines_page/search_engines_list.html">
 
 <dom-module id="settings-search-engines-page">
   <link rel="import" type="css" href="chrome://md-settings/settings_shared.css">
   <template>
     <style>
       .other-label-container {
         display: flex;
       }
 
       .other-label-container span {
         flex: 1;
       }
     </style>
     <div class="settings-box block">
       <settings-search-engines-list engines="[[defaultEngines]]">
       </settings-search-engines-list>
     </div>
     <div class="settings-box">
       <paper-button class="link-button"
-          i18n-content="searchEnginesAddSearchEngineLabel"
+          i18n-content="searchEnginesAddSearchEngine"
           on-tap="onAddSearchEngineTap_" id="addSearchEngine"></paper-button>
     </div>
     <template is="dom-if" if="[[showAddSearchEngineDialog_]]" restamp>
       <settings-search-engine-dialog></settings-search-engine-dialog>
     </template>
     <div class="settings-box block">
       <div class="other-label-container">
-        <span i18n-content="searchEnginesOtherLabel"></span>
+        <span i18n-content="searchEnginesOther"></span>
         <cr-expand-button expanded="{{otherSearchEnginesExpanded_}}">
         </cr-expand-button>
       </div>
 
       <iron-collapse id="collapse" opened=[[otherSearchEnginesExpanded_]]>
         <settings-search-engines-list engines="[[otherEngines]]">
         </settings-search-engines-list>
       </iron-collapse>
     </div>
   </template>
   <script src="search_engines_page.js"></script>
 </dom-module>