Revert 220500 "Adds the contextMessage field to notifications."

trunk/src/ui/message_center/notification.h

Index: trunk/src/ui/message_center/notification.h
===================================================================
--- trunk/src/ui/message_center/notification.h	(revision 220506)
+++ trunk/src/ui/message_center/notification.h	(working copy)
@@ -43,7 +43,6 @@
   bool never_timeout;
   base::Time timestamp;
   string16 expanded_message;
-  string16 context_message;
   gfx::Image image;
   std::vector<NotificationItem> items;
   int progress;
@@ -103,13 +102,6 @@
     optional_fields_.expanded_message = expanded_message;
   }
 
-  const string16& context_message() const {
-    return optional_fields_.context_message;
-  }
-  void set_context_message(const string16& context_message) {
-    optional_fields_.context_message = context_message;
-  }
-
   const std::vector<NotificationItem>& items() const {
     return optional_fields_.items;
   }