Eclipse Search File in Popup Menu - Eclipse Mars 4.5.

Creating a File Menu in Eclipse...

  <extension
         point="org.eclipse.ui.menus">
      <menuContribution
            allPopups="true"
            locationURI="popup:org.eclipse.ui.popup.any?after=additions">
         <command
               commandId="org.eclipse.search.ui.openFileSearchPage"
               label="File Search..."
               style="push">
            <visibleWhen
                  checkEnabled="true">
            </visibleWhen>
         </command>
      </menuContribution>
   </extension>