Show an extra privacy warning on Win8

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 e0acdb745c6da8bcccdded3af1c293138a8b7fa6..ed2f8200d5fb7f5b8f7e7c0ad827b3e42037880c 100644
--- a/chrome/browser/resources/options2/browser_options.js
+++ b/chrome/browser/resources/options2/browser_options.js
@@ -245,6 +245,11 @@ cr.define('options', function() {
       }
 
       // Privacy section.
+      var winVerMatch = /Windows NT (\d+(?:\.\d+))?/.exec(navigator.userAgent);

[Lei Zhang, 2012/08/17 02:28:13]

If this is generally useful, please consider moving into into a common .js file
to share with other WebUIs.

[MAD, 2012/08/17 17:34:09]

I doubt (and actually hope) it won't be used much...
And since we want to merge this to M22, I would prefer to keep the CL as small
as possible...

But if I get to need this again, I promise I won't copy the code, I'll extract
it... :-)

+      var isWin8 = winVerMatch && winVerMatch[1] >= 6.2;
+      var win8Element = $('privacy-win8-data-settings');
+      if (win8Element)
+        win8Element.hidden = !isWin8;
       $('privacyContentSettingsButton').onclick = function(event) {
         OptionsPage.navigateToPage('content');
         OptionsPage.showTab($('cookies-nav-tab'));