Modifies the threshold for hidpi displays.

chrome/browser/resources/options/chromeos/display_options.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('options', function() {
   var OptionsPage = options.OptionsPage;
 
   // The scale ratio of the display rectangle to its original size.
   /** @const */ var VISUAL_SCALE = 1 / 10;
 
@@ skipping 604 matching lines @@
       if (display.resolutions.length <= 1) {
         var option = document.createElement('option');
         option.value = 'default';
         option.textContent = display.width + 'x' + display.height;
         option.selected = true;
         resolution.appendChild(option);
         resolution.disabled = true;
       } else {
         for (var i = 0; i < display.resolutions.length; i++) {
           var option = document.createElement('option');
+          var width = display.resolutions[i].width;
+          var height = display.resolutions[i].height;
+          var scaleFactor = display.resolutions[i].scaleFactor;
+          if (display.resolutions[i].scaleFactor) {
+            width /= scaleFactor;
+            height /= scaleFactor;
+          }
           option.value = i;
-          option.textContent = display.resolutions[i].width + 'x' +
-              display.resolutions[i].height;
+          option.textContent = width + 'x' + height;
+          if (scaleFactor && scaleFactor > 1)
+            option.textContent += '(x' + scaleFactor + ')';
           if (display.resolutions[i].isBest) {
             option.textContent += ' ' +
                 loadTimeData.getString('annotateBest');
           }
           option.selected = display.resolutions[i].selected;
           resolution.appendChild(option);
         }
         resolution.disabled = (display.resolutions.length <= 1);
       }
 
@@ skipping 239 matching lines @@
       mirroring, displays, layout, offset) {
     DisplayOptions.getInstance().onDisplayChanged_(
         mirroring, displays, layout, offset);
   };
 
   // Export
   return {
     DisplayOptions: DisplayOptions
   };
 });