Initial accounts options page.

- Add a "Accounts" subpage for ChromeOS;
- Two checkboxes for allowing BWSI and allowing guest signin;
- Make measureItem in list.js returns 0 instead of -1. The itemHeight is -1
  when the list is not visible. And 0 will let redraw to call measureItem
  again;
- Add an onVisibilityChanged callback that is called when "visible" property
  is changed; And use that to trigger user list's redraw;
- Use a mock settings object so that the UI flow could be tested;

- Update options_page.css to add a few css missed from dhg's overlay cl;

BUG=chromium-os:4734
TEST=None. This is a draft version and will be changed after UX feedbacks.

Review URL: http://codereview.chromium.org/2935011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@52676 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 12 insertions, 1 deletions

diff --git a/chrome/browser/resources/options/preferences.js b/chrome/browser/resources/options/preferences.js
index db86ea4..cb226bcb 100644
--- a/chrome/browser/resources/options/preferences.js
+++ b/chrome/browser/resources/options/preferences.js
@@ -63,6 +63,16 @@ Preferences.setStringPref = function(name, value) {
   chrome.send('setStringPref', [name, value]);
 };
 
+/**
+ * Sets value of a JSON preference.
+ * and signals its changed value.
+ * @param {string} name Preference name.
+ * @param {string} value New preference value.
+ */
+Preferences.setObjectPref = function(name, value) {
+  chrome.send('setObjectPref', [name, JSON.stringify(value)]);
+};
+
 Preferences.prototype = {
   __proto__: cr.EventTarget.prototype,
 
@@ -102,7 +112,8 @@ Preferences.prototype = {
    */
   flattenMapAndDispatchEvent_: function(prefix, dict) {
     for (var prefName in dict) {
-      if (typeof dict[prefName] == 'object') {
+      if (typeof dict[prefName] == 'object' &&
+          !this.registeredPreferences_[prefix + prefName]) {
         this.flattenMapAndDispatchEvent_(prefix + prefName + '.',
             dict[prefName]);
       } else {