Revert 268203 "There are many ways to get it wrong."

trunk/src/ui/message_center/cocoa/tray_view_controller.mm

Index: trunk/src/ui/message_center/cocoa/tray_view_controller.mm
===================================================================
--- trunk/src/ui/message_center/cocoa/tray_view_controller.mm	(revision 268216)
+++ trunk/src/ui/message_center/cocoa/tray_view_controller.mm	(working copy)
@@ -56,7 +56,7 @@
 // Step 1: hide all notifications pending removal with fade-out animation.
 - (void)hideNotificationsPendingRemoval;
 
-// Step 2: move up all remaining notifications to take over the available space
+// Step 2: move up all remaining notfications to take over the available space
 // due to hiding notifications. The scroll view and the window remain unchanged.
 - (void)moveUpRemainingNotifications;
 
@@ -67,7 +67,7 @@
 // "Clear All" is clicked.
 - (void)clearOneNotification;
 
-// When all visible notifications slide out, re-enable controls and remove
+// When all visible notificatons slide out, re-enable controls and remove
 // notifications from the message center.
 - (void)finalizeClearAll;