MD Settings: tweak tap and actionable-ness of <settings-toggle-button>

chrome/browser/resources/settings/controls/settings_toggle_button.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-toggle-button/paper-toggle-button.html">
 <link rel="import" href="/controls/settings_boolean_control_behavior.html">
 <link rel="import" href="/settings_shared_css.html">
 
 <dom-module id="settings-toggle-button">
   <template>
     <style include="settings-shared">
       #outerRow {
         align-items: center;
         display: flex;
         min-height: var(--settings-row-two-line-min-height);
         width: 100%;
       }
 
       #outerRow[noSubLabel] {
         min-height: var(--settings-row-min-height);
       }
 
       paper-toggle-button:not([checked]) .secondary {
         @apply(--settings-secondary-unchecked);
       }
 
       cr-policy-pref-indicator {
         -webkit-margin-end: var(--checkbox-spacing);
       }
     </style>
     <div id="outerRow" noSubLabel$="[[!subLabel]]">
-      <div class="flex">
+      <div class="flex" on-tap="onLabelWrapperTap_"
+          actionable$="[[!controlDisabled_(disabled, pref)]]">
         <div>[[label]]</div>
         <div class="secondary">[[subLabel]]</div>
       </div>
       <template is="dom-if" if="[[pref.controlledBy]]">
         <cr-policy-pref-indicator pref="[[pref]]"></cr-policy-pref-indicator>
       </template>
       <paper-toggle-button id="control" checked="{{checked}}"
           disabled="[[controlDisabled_(disabled, pref)]]">
       </paper-toggle-button>
     </div>
   </template>
   <script src="settings_toggle_button.js"></script>
 </dom-module>