Adds the touch calibration setting behind a chrome switch

chrome/browser/resources/settings/device_page/display.html

 <link rel="import" href="chrome://resources/cr_elements/cr_slider/cr_slider.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/md_select_css.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-flex-layout.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-checkbox/paper-checkbox.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-tabs/paper-tabs.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-toggle-button/paper-toggle-button.html">
@@ skipping 112 matching lines @@
           <select class="md-select" value="[[selectedDisplay.rotation]]"
               on-change="onOrientationChange_">
             <option value="0">$i18n{displayOrientationStandard}</option>
             <option value="90">90</option>
             <option value="180">180</option>
             <option value="270">270</option>
           </select>
           <span class="md-select-underline"></span>
         </div>
       </div>
       <div id="subpage-trigger" class="settings-box embedded two-line"

[stevenjb, 2017/01/11 18:22:52]

nit: Could you remove this id also?

[malaykeshav, 2017/01/11 19:24:17]

Done.

           on-tap="onOverscanTap_" hidden$="[[selectedDisplay.isInternal]]"
           actionable>
         <div class="start">
           <div>$i18n{displayOverscanPageTitle}</div>
           <div class="secondary">$i18n{displayOverscanPageText}</div>
         </div>
         <button class="subpage-arrow" is="paper-icon-button-light"></button>
       </div>
 
       <settings-display-overscan-dialog id="displayOverscan"
           display-id="{{overscanDisplayId}}">
       </settings-display-overscan-dialog>
 
+      <div class="settings-box embedded two-line"
+          on-tap="onTouchCalibrationTap_"
+          hidden$="[[!showTouchCalibrationSetting_(selectedDisplay)]]"
+          actionable>
+        <div class="start">
+          <div>$i18n{displayTouchCalibrationTitle}</div>
+          <div class="secondary">$i18n{displayTouchCalibrationText}</div>
+        </div>
+        <button class="subpage-arrow" is="paper-icon-button-light"></button>
+      </div>
     </div>
   </template>
   <script src="display.js"></script>
 </dom-module>