Clean up copy-and-pasted code in prefs UI classes

chrome/browser/resources/options/font_settings.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;
 
   /**
    * FontSettings class
@@ skipping 64 matching lines @@
 
     /**
      * Handler that is called when the user changes the position of the standard
      * font size slider. This allows the UI to show a preview of the change
      * before the slider has been released and the associated prefs updated.
      * @param {Element} el The slider input element.
      * @param {Event} event Change event.
      * @private
      */
     standardRangeChanged_: function(el, event) {
-      var value = el.mapValueToRange(el.value);
+      var size = el.mapPositionToPref(el.value);
       var fontSampleEl = $('standard-font-sample');
-      this.setUpFontSample_(fontSampleEl, value, fontSampleEl.style.fontFamily,
+      this.setUpFontSample_(fontSampleEl, size, fontSampleEl.style.fontFamily,
                             true);
 
       fontSampleEl = $('serif-font-sample');
-      this.setUpFontSample_(fontSampleEl, value, fontSampleEl.style.fontFamily,
+      this.setUpFontSample_(fontSampleEl, size, fontSampleEl.style.fontFamily,
                             true);
 
       fontSampleEl = $('sans-serif-font-sample');
-      this.setUpFontSample_(fontSampleEl, value, fontSampleEl.style.fontFamily,
+      this.setUpFontSample_(fontSampleEl, size, fontSampleEl.style.fontFamily,
                             true);
 
       fontSampleEl = $('fixed-font-sample');
       this.setUpFontSample_(fontSampleEl,
-                            value - OptionsPage.SIZE_DIFFERENCE_FIXED_STANDARD,
+                            size - OptionsPage.SIZE_DIFFERENCE_FIXED_STANDARD,
                             fontSampleEl.style.fontFamily, false);
     },
 
     /**
      * Sets the 'default_fixed_font_size' preference when the user changes the
      * standard font size.
      * @param {Event} event Change event.
      * @private
      */
     standardFontSizeChanged_: function(event) {
-      var value = this.mapValueToRange(this.value);
+      var size = this.mapPositionToPref(this.value);
       Preferences.setIntegerPref(
         'webkit.webprefs.default_fixed_font_size',
-        value - OptionsPage.SIZE_DIFFERENCE_FIXED_STANDARD, true);
+        size - OptionsPage.SIZE_DIFFERENCE_FIXED_STANDARD, true);
       return false;
     },
 
     /**
      * Handler that is called when the user changes the position of the minimum
      * font size slider. This allows the UI to show a preview of the change
      * before the slider has been released and the associated prefs updated.
      * @param {Element} el The slider input element.
      * @param {Event} event Change event.
      * @private
      */
     minimumRangeChanged_: function(el, event) {
-      var value = el.mapValueToRange(el.value);
+      var size = el.mapPositionToPref(el.value);
       var fontSampleEl = $('minimum-font-sample');
-      this.setUpFontSample_(fontSampleEl, value, fontSampleEl.style.fontFamily,
+      this.setUpFontSample_(fontSampleEl, size, fontSampleEl.style.fontFamily,
                             true);
     },
 
     /**
      * Sets the 'minimum_logical_font_size' preference when the user changes the
      * minimum font size.
      * @param {Event} event Change event.
      * @private
      */
     minimumFontSizeChanged_: function(event) {
-      var value = this.mapValueToRange(this.value);
+      var size = this.mapPositionToPref(this.value);
       Preferences.setIntegerPref(
-        'webkit.webprefs.minimum_logical_font_size', value, true);
+        'webkit.webprefs.minimum_logical_font_size', size, true);
       return false;
     },
 
     /**
      * Sets the text, font size and font family of the sample text.
      * @param {Element} el The div containing the sample text.
      * @param {number} size The font size of the sample text.
      * @param {string} font The font family of the sample text.
      * @param {bool} showSize True if the font size should appear in the sample.
      * @private
@@ skipping 80 matching lines @@
     FontSettings.getInstance().setUpFontSample_($('minimum-font-sample'), size,
                                                 null, true);
   };
 
   // Export
   return {
     FontSettings: FontSettings
   };
 });