[incremental search] using dom.importCssString

lib/ace/incremental_search.js

@@ -186,23 +186,15 @@ exports.IncrementalSearch = IncrementalSearch;
  *
  **/
 
+var dom = require('./lib/dom');
 function patchHighlightMarkerStyling(options) {
     options = options || {};
     var id = 'incremental-search-highlight-style-patch',
-        style = document.getElementById(id);
-    if (style) {
-        if (options.enable) return;
-        style.parentNode.removeChild(style);
-        return;
-    }
-    if (!options.enable) return;
-    style = document.createElement('style');
-    style.setAttribute('id', id);
-    style.textContent = "div.ace_selected-word {\n"
-                      + "  background-color: orange !important;\n"
-                      + "  border: 0 !important;"
-                      + "}\n"
-    document.getElementsByTagName('head')[0].appendChild(style);
+        css = 'div.ace_selected-word {\n'
+            + '  background-color: orange !important;\n'
+            + '  border: 0 !important;\n'
+            + '}\n'
+    dom.importCssString(css, id);
 }