MD Settings: minor cleanup of content settings code.

chrome/browser/resources/settings/privacy_page/privacy_page.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_dialog/cr_dialog.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_vars_css.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/web_ui_listener_behavior.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/iron-flex-layout-classes.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.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-light.html">
 <link rel="import" href="../clear_browsing_data_dialog/clear_browsing_data_dialog.html">
@@ skipping 254 matching lines @@
           <category-setting-exceptions
               category="{{ContentSettingsTypes.CAMERA}}" read-only-list>
           </category-setting-exceptions>
         </settings-subpage>
       </template>
       <template is="dom-if" route-path="/content/cookies" no-search>
         <settings-subpage page-title="$i18n{siteSettingsCategoryCookies}">
           <category-default-setting category="{{ContentSettingsTypes.COOKIES}}"
               toggle-off-label="$i18n{siteSettingsBlocked}"
               toggle-on-label="$i18n{siteSettingsCookiesAllowedRecommended}"
-              sub-option-label="$i18n{deleteDataPostSession}"
-              sub-option-secondary=""><!-- To work with :empty. -->
+              sub-option-label="$i18n{deleteDataPostSession}">
           </category-default-setting>
-          <div class="settings-box">
+          <div class="settings-box two-line">
             <settings-toggle-button class="start"
                 pref="{{prefs.profile.block_third_party_cookies}}"
                 label="$i18n{thirdPartyCookie}"
                 sub-label="$i18n{thirdPartyCookieSublabel}">
             </settings-toggle-button>
           </div>
           <category-setting-exceptions
               category="{{ContentSettingsTypes.COOKIES}}">
           </category-setting-exceptions>
           <site-data></site-data>
@@ skipping 140 matching lines @@
           <usb-devices></usb-devices>
         </settings-subpage>
       </template>
       <template is="dom-if" route-path="/content/siteDetails" no-search>
         <settings-subpage page-title="$i18n{siteSettingsSiteDetails}">
           <site-details></site-details>
         </settings-subpage>
       </template>
       <template is="dom-if" route-path="/cookies/detail" no-search>
         <settings-subpage page-title="[[pageTitle]]">
-          <paper-button class="subpage-title-extra"
+          <paper-button class="subpage-title-extra secondary-button"
               on-tap="onRemoveAllCookiesFromSite_">
             $i18n{siteSettingsCookieRemoveAll}
           </paper-button>
           <site-data-details-subpage page-title="{{pageTitle}}">
           </site-data-details-subpage>
         </settings-subpage>
       </template>
       <template is="dom-if" route-path="/content/protectedContent" no-search>
         <settings-subpage page-title="$i18n{siteSettingsProtectedContent}">
           <div class="settings-box first">
-            <settings-toggle-button class="start"
+            <settings-toggle-button class="start primary-toggle"

[dschuyler, 2017/03/22 20:30:57]

Sorry, where is primary-toggle defined?

[scottchen, 2017/03/23 00:13:58]

linked in previous reply.

                 pref="{{prefs.webkit.webprefs.encrypted_media_enabled}}"
                 label="[[getProtectedContentLabel_(
                     prefs.webkit.webprefs.encrypted_media_enabled.value)]]"
                 disabled$="[[isGuest_]]">
             </settings-toggle-button>
           </div>
 <if expr="chromeos or is_win">
           <div class="settings-box first two-line">
             $i18n{siteSettingsProtectedContentIdentifiersExplanation}
           </div>
           <div class="settings-box first">
-            <settings-toggle-button class="start"
+            <settings-toggle-button class="start primary-toggle"
                 pref="{{prefs.settings.privacy.drm_enabled}}"
                 label="[[getProtectedContentIdentifiersLabel_(
                     prefs.settings.privacy.drm_enabled.value)]]"
                 disabled$="[[isGuest_]]">
             </settings-toggle-button>
           </div>
 </if>
 <if expr="chromeos">
           <template is="dom-if"
               if="[[prefs.settings.privacy.drm_enabled.value]]">
             <category-setting-exceptions
                 category="{{ContentSettingsTypes.PROTECTED_CONTENT}}">
             </category-setting-exceptions>
           </template>
 </if>
         </settings-subpage>
       </template>
     </settings-animated-pages>
   </template>
   <script src="privacy_page.js"></script>
 </dom-module>