DOMUI: Use dispatchSimpleEvent instead of programatically clicking the checkbox

to notify the control that the checked state has changed.

BUG=69613
TEST=none

Review URL: http://codereview.chromium.org/6285003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71973 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/options/personal_options.js

@@ -100,15 +100,21 @@ cr.define('options', function() {
       var idx = $('sync-select').selectedIndex;
       var syncCheckboxes = $('sync-table').getElementsByTagName('input');
       if (idx == 0) {
+        // 'Choose what to sync.'
         for (var i = 0; i < syncCheckboxes.length; i++) {
           syncCheckboxes[i].disabled = false;
         }
       } else if (idx == 1) {
+        // 'Everything' is synced.
         for (var i = 0; i < syncCheckboxes.length; i++) {
+          if (!syncCheckboxes[i].checked) {
+            syncCheckboxes[i].checked = true;
+
             // Merely setting checked = true is not enough to trigger the pref
-          // being set; thus, we simulate the click.
-          if (!syncCheckboxes[i].checked)
-            syncCheckboxes[i].click();
+            // being set; thus, we dispatch a change event to notify
+            // PrefCheckbox |checked| has changed.
+            cr.dispatchSimpleEvent(syncCheckboxes[i], 'change');
+          }
 
           syncCheckboxes[i].disabled = true;
         }

chrome/browser/resources/options/pref_ui.js

@@ -50,7 +50,7 @@ cr.define('options', function() {
 
       // Listen to user events.
       this.addEventListener(
-          'click',
+          'change',
           function(e) {
             var value = self.inverted_pref ? !self.checked : self.checked;
             switch(self.valueType) {
@@ -72,7 +72,7 @@ cr.define('options', function() {
      */
     initializeValueType: function(valueType) {
       this.valueType = valueType || 'boolean';
-    }
+    },
   };
 
   /**