MD Settings: Fix dragging slider bugging out the Enter key.

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

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_pref_behavior.html">
 <link rel="import" href="chrome://resources/html/assert.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-slider/paper-slider.html">
 
 <dom-module id="settings-slider">
   <template>
     <style>
       :host {
         --calculated-paper-slider-height: var(--paper-slider-height, 2px);
@@ skipping 48 matching lines @@
         width: 100%;
       }
     </style>
     <template is="dom-if" if="[[pref.controlledBy]]" restamp>
       <cr-policy-pref-indicator pref="[[pref]]"></cr-policy-pref-indicator>
     </template>
     <div class="outer">
       <paper-slider id="slider"
           disabled$="[[disableSlider_]]" snaps
           on-immediate-value-changed="onSliderChanged_" max="[[max]]"
-          min="[[min]]">
+          min="[[min]]" on-up="resetTrackLock_">
       </paper-slider>
       <div id="labels" disabled$="[[disableSlider_]]">
         <div id="label-begin">[[labelMin]]</div>
         <div id="label-end">[[labelMax]]</div>
       </div>
     </div>
   </template>
   <script src="settings_slider.js"></script>
 </dom-module>