[MD settings] replace secondary-action with separator

chrome/browser/resources/settings/bluetooth_page/bluetooth_page.html

 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_pref_indicator.html">
 <link rel="import" href="chrome://resources/html/polymer.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-icon-button/paper-icon-button-light.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-toggle-button/paper-toggle-button.html">
 <link rel="import" href="../i18n_setup.html">
 <link rel="import" href="../icons.html">
 <link rel="import" href="../prefs/prefs.html">
 <link rel="import" href="../settings_page/settings_animated_pages.html">
 <link rel="import" href="../settings_page/settings_subpage.html">
@@ skipping 21 matching lines @@
               pref="[[prefs.cros.device.allow_bluetooth]]"
             hidden="[[prefs.cros.device.allow_bluetooth.value]]">
           </cr-policy-pref-indicator>
           <template is="dom-if" if="[[bluetoothToggleState_]]">
             <button class="subpage-arrow" is="paper-icon-button-light"
                 on-tap="onSubpageArrowTap_"
                 aria-label="$i18n{bluetoothPageTitle}"
                 aria-describedby="bluetoothSecondary">
             </button>
           </template>
-          <div class="secondary-action">
-            <paper-toggle-button id="enableBluetooth"
-                checked="{{bluetoothToggleState_}}"
-                disabled$="[[bluetoothToggleDisabled_]]" on-tap="stopTap_"
-                aria-label="$i18n{bluetoothToggleA11yLabel}">
-            </paper-toggle-button>
-          </div>
+          <div class="separator"></div>
+          <paper-toggle-button id="enableBluetooth"
+              checked="{{bluetoothToggleState_}}"
+              disabled$="[[bluetoothToggleDisabled_]]" on-tap="stopTap_"
+              aria-label="$i18n{bluetoothToggleA11yLabel}">
+          </paper-toggle-button>
         </div>
       </neon-animatable>
 
       <template is="dom-if" route-path="/bluetoothDevices">
         <settings-subpage associated-control="[[$$('#bluetoothDevices')]]"
             page-title="$i18n{bluetoothPageTitle}">
           <settings-bluetooth-subpage
               adapter-state="[[adapterState_]]"
               bluetooth-toggle-state="{{bluetoothToggleState_}}"
               bluetooth-toggle-disabled="[[bluetoothToggleDisabled_]]"
               bluetooth="[[bluetooth]]"
               bluetooth-private="[[bluetoothPrivate]]">
           </settings-bluetooth-subpage>
         </settings-subpage>
       </template>
 
     </settings-animated-pages>
   </template>
   <script src="bluetooth_page.js"></script>
 </dom-module>