Added options browser_tests using the generator and js handler framework.

chrome/browser/ui/webui/javascript2webui.js

Index: chrome/browser/ui/webui/javascript2webui.js
diff --git a/chrome/browser/ui/webui/javascript2webui.js b/chrome/browser/ui/webui/javascript2webui.js
index a61a4adc746ba0d3848434aa530f4e972db64175..d93330f959fe97284cda5f96c637b66c0ec348e3 100644
--- a/chrome/browser/ui/webui/javascript2webui.js
+++ b/chrome/browser/ui/webui/javascript2webui.js
@@ -19,14 +19,20 @@ if (!('test_fixture' in this)) {
   print(js_file + ' did not define test_fixture.');
   quit(-1);
 }
+if (!('test_browse_preload' in this)) {
+  this['test_browse_preload'] = undefined;
+}
 print('// GENERATED FILE');
 print('// ' + arguments.join(' '));
 print('// PLEASE DO NOT HAND EDIT!');
 print();
 for (var func in this) {
-  if (!prevfuncs[func] && this[func] instanceof Function) {
+  if (!prevfuncs[func] && typeof(this[func]) == 'function') {
     print('IN_PROC_BROWSER_TEST_F(' + test_fixture + ', ' + func + ') {');
     print('  AddLibrary(FilePath(FILE_PATH_LITERAL("' + js_file_base + '")));');
+    if (test_browse_preload) {
+      print('  BrowsePreload(GURL("' + test_browse_preload + '"), true);');
+    }
     print('  ASSERT_TRUE(RunJavascriptTest("' + func + '"));');
     print('}');
     print();