[MD settings] adjusting heights of settings rows; removing two .css files; unifying settings layout

chrome/browser/resources/settings/languages_page/manage_languages_page.html

 <link rel="import" href="chrome://resources/polymer/v1_0/polymer/polymer.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-icons/iron-icons.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-list/iron-list.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-item/paper-item.html">
 <link rel="import" href="chrome://resources/html/assert.html">
 <link rel="import" href="chrome://resources/html/cr.html">
 <link rel="import" href="languages.html">
 
 <dom-module id="settings-manage-languages-page">
   <link rel="import" type="css"
       href="chrome://md-settings/settings_shared.css">
   <link rel="import" type="css" href="manage_languages_page.css">
   <template>
     <settings-languages languages="{{languages}}"></settings-languages>
     <div class="settings-box content">
       <h2 i18n-content="enabledLanguages"></h2>
       <div>
         <template is="dom-repeat" items="{{languages.enabledLanguages}}">
-          <paper-item class="split">
+          <paper-item>
             <div class="language-name"
                 title="[[item.language.nativeDisplayName]]"
                 >[[item.language.displayName]]</div>
             <paper-icon-button icon="clear" on-tap="onRemoveLanguageTap_"
                 hidden$="[[!canRemoveLanguage_(item.language.code, prefs.intl.app_locale.value)]]">
             </paper-icon-button>
           </paper-item>
         </template>
       </div>
       <h2 i18n-content="allLanguages"></h2>
       <iron-list items="{{availableLanguages_}}" as="item">
         <template>
           <paper-item on-tap="onAddLanguageTap_">
             <div class="language-name">
               <span>[[item.displayName]]</span> -
               <span>[[item.nativeDisplayName]]</span>
             </div>
             <iron-icon icon="done" hidden$="[[!item.enabled]]">
             </iron-icon>
           </paper-item>
         </template>
       </iron-list>
     </div>
   </template>
   <script src="manage_languages_page.js"></script>
 </dom-module>
-