fixed about:flags by switching onclick to onchange for select element

BUG=107798
TEST=multi-state works on mac in chrome:flags


Review URL: http://codereview.chromium.org/9669036

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@126342 0039d316-1c4b-4281-b951-d872f2087c98

AUTHORS

@@ -169,3 +169,4 @@ Yumikiyo Osanai <yumios.art@gmail.com>
 Matthew Robertson <matthewrobertson03@gmail.com>
 Mao Yujie <yujie.mao@intel.com>
 Xinchao He <hexinchao@gmail.com>
+Stephen Searles <stephen.searles@gmail.com>

chrome/browser/resources/flags.js

@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -47,7 +47,7 @@ function renderTemplate(flagsExperimentsData) {
   // Add handlers to dynamically created HTML elements.
   var elements = document.getElementsByClassName('experiment-select');
   for (var i = 0; i < elements.length; ++i) {
-    elements[i].onclick = function () {
+    elements[i].onchange = function () {
       handleSelectChoiceExperiment(this, this.selectedIndex);
       return false;
     };