[oobe] Show error notification on the network screen.

BUG=chromium-os:17336
TEST=manual

Review URL: http://codereview.chromium.org/7646015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96765 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/chromeos/login/oobe_screen_network.js

@@ -353,14 +353,44 @@ cr.define('oobe', function() {
     }
   };
 
+  /**
+   * Updates networks list with the new data.
+   * @param {!Object} data Networks list.
+   */
   NetworkScreen.updateNetworks = function(data) {
     $('connect').updateNetworks(data);
   };
 
+  /**
+   * Updates network title, which is shown by the drop-down.
+   * @param {string} title Title to be displayed.
+   * @param {!Object} icon Icon to be displayed.
+   */
   NetworkScreen.updateNetworkTitle = function(title, icon) {
     $('connect').updateNetworkTitle(title, icon);
   };
 
+  /**
+   * Shows the network error message.
+   * @param {string} message Message to be shown.
+   */
+  NetworkScreen.showError = function(message) {
+    var error = document.createElement('div');
+    var messageDiv = document.createElement('div');
+    messageDiv.className = 'error-message';
+    messageDiv.textContent = message;
+    error.appendChild(messageDiv);
+
+    $('bubble').showContentForElement($('networks-list'), error);
+  };
+
+  /**
+   * Hides the error notification bubble (if any).
+   */
+  NetworkScreen.clearErrors = function() {
+    $('bubble').hide();
+  };
+
   return {
     NetworkScreen: NetworkScreen
   };

chrome/browser/ui/webui/chromeos/login/network_screen_handler.cc

@@ -81,12 +81,13 @@ void NetworkScreenHandler::Hide() {
 }
 
 void NetworkScreenHandler::ShowError(const string16& message) {
-  // scoped_ptr<Value> message_value(Value::CreateStringValue(message));
-  // web_ui_->CallJavascriptFunction("cr.ui.Oobe.showError", *message_value);
+  scoped_ptr<Value> message_value(Value::CreateStringValue(message));
+  web_ui_->CallJavascriptFunction("oobe.NetworkScreen.showError",
+                                  *message_value);
 }
 
 void NetworkScreenHandler::ClearErrors() {
-  // web_ui_->CallJavascriptFunction("cr.ui.Oobe.clearErrors");
+  web_ui_->CallJavascriptFunction("oobe.NetworkScreen.clearErrors");
 }
 
 void NetworkScreenHandler::ShowConnectingStatus(