fixup! Bug 31286: Implementation of bridge, proxy, and firewall settings in...

fixup! Bug 31286: Implementation of bridge, proxy, and firewall settings in about:preferences#connection

Bug 42662: Use data-hidden-from-search to hide the firefox network
settings.

browser/components/preferences/main.inc.xhtml

@@ -801,12 +801,13 @@
 <hbox id="networkProxyCategory"
       class="subcategory"
       hidden="true"
+      data-hidden-from-search="true"
       data-category="paneGeneral">
   <html:h1 data-l10n-id="network-settings-title"/>
 </hbox>
 
 <!-- Network Settings-->
-<groupbox id="connectionGroup" data-category="paneGeneral" hidden="true">
+<groupbox id="connectionGroup" data-category="paneGeneral" data-hidden-from-search="true" hidden="true">
   <label class="search-header" hidden="true"><html:h2 data-l10n-id="network-settings-title"/></label>
 
   <hbox align="center"