Correct references to obsolete WebKit pref names in options code

chrome/browser/resources/options2/browser_options.js

Index: chrome/browser/resources/options2/browser_options.js
diff --git a/chrome/browser/resources/options2/browser_options.js b/chrome/browser/resources/options2/browser_options.js
index c95b74419963fd507b5fcf0c7a1a283947745e55..bc424196760cee81542f472f645e975ed140998a 100644
--- a/chrome/browser/resources/options2/browser_options.js
+++ b/chrome/browser/resources/options2/browser_options.js
@@ -364,7 +364,7 @@ cr.define('options', function() {
       $('defaultFontSize').onchange = function(event) {
         var value = event.target.options[event.target.selectedIndex].value;
         Preferences.setIntegerPref(
-             'webkit.webprefs.global.default_fixed_font_size',
+             'webkit.webprefs.default_fixed_font_size',
              value - OptionsPage.SIZE_DIFFERENCE_FIXED_STANDARD, '');
         chrome.send('defaultFontSizeAction', [String(value)]);
       };