Add starter code for 'Clear Browser Data' and 'Font Settings' overlay dialogs...

chrome/browser/resources/options/advanced_options.js

Index: chrome/browser/resources/options/advanced_options.js
===================================================================
--- chrome/browser/resources/options/advanced_options.js	(revision 52920)
+++ chrome/browser/resources/options/advanced_options.js	(working copy)
@@ -26,14 +26,10 @@
       OptionsPage.showPageByName('content');
     };
     $('privacyClearDataButton').onclick = function(event) {
-      // TODO(csilv): spawn clear data overlay dialog.
+      OptionsPage.showOverlay('clearBrowserDataOverlay');
     };
     $('proxiesConfigureButton').onclick = function(event) {
-      if (cr.isMac) {
-        chrome.send('showNetworkProxySettings');
-      } else {
-        // TODO(csilv): spawn network proxy settings sub-dialog.
-      }
+      chrome.send('showNetworkProxySettings');
     };
     $('downloadLocationBrowseButton').onclick = function(event) {
       chrome.send('selectDownloadLocation');
@@ -42,7 +38,7 @@
       chrome.send('autoOpenFileTypesAction');
     };
     $('fontSettingsConfigureFontsOnlyButton').onclick = function(event) {
-      // TODO(csilv): spawn font settings sub-dialog.
+      OptionsPage.showOverlay('fontSettingsOverlay');
     };
     $('certificatesManageButton').onclick = function(event) {
       chrome.send('showManageSSLCertificates');