Revert 152135 - Fix accessability for web notification tray.

ash/system/web_notification/web_notification_tray.cc

Index: ash/system/web_notification/web_notification_tray.cc
===================================================================
--- ash/system/web_notification/web_notification_tray.cc	(revision 152315)
+++ ash/system/web_notification/web_notification_tray.cc	(working copy)
@@ -717,7 +717,6 @@
     init_params.bubble_width = kWebNotificationWidth;
     if (bubble_type == BUBBLE_TYPE_MESAGE_CENTER) {
       init_params.max_height = kWebNotificationBubbleMaxHeight;
-      init_params.can_activate = true;
     } else {
       init_params.arrow_color = kBackgroundColor;
       init_params.close_on_deactivate = false;
@@ -791,10 +790,6 @@
     tray_->HideMessageCenterBubble();
   }
 
-  virtual string16 GetAccessibleName() OVERRIDE {
-    return tray_->GetAccessibleName();
-  }
-
   // Overridden from views::WidgetObserver:
   virtual void OnWidgetClosing(views::Widget* widget) OVERRIDE {
     CHECK_EQ(bubble_widget_, widget);
@@ -1002,11 +997,6 @@
     message_center_bubble_->bubble_view()->UpdateBubble();
 }
 
-string16 WebNotificationTray::GetAccessibleName() {
-  return l10n_util::GetStringUTF16(
-      IDS_ASH_WEB_NOTIFICATION_TRAY_ACCESSIBLE_NAME);
-}
-
 // Protected methods (invoked only from Bubble and its child classes)
 
 void WebNotificationTray::SendRemoveNotification(const std::string& id) {