content: convert user action notification to observer usage

content/public/browser/notification_types.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 #define CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
 //
 // Only notifications that are fired from the content module should be here. We
 // should never have a notification that is fired by the embedder and listened
 // to by content.
 namespace content {
 
 enum NotificationType {
   NOTIFICATION_CONTENT_START = 0,
 
   // General -----------------------------------------------------------------
 
   // Special signal value to represent an interest in all notifications.
   // Not valid when posting a notification.
   NOTIFICATION_ALL = NOTIFICATION_CONTENT_START,
 
-  // The app is done processing user actions, now is a good time to do
-  // some background work.
-  NOTIFICATION_IDLE,
-
-  // Means that the app has just started doing something in response to a
-  // user action, and that background processes shouldn't run if avoidable.
-  NOTIFICATION_BUSY,
-
-  // This is sent when the user does a gesture resulting in a noteworthy
-  // action taking place. This is typically used for logging. The source is
-  // the browser context, and the details is a string identifying the action.
-  NOTIFICATION_USER_ACTION,
-
   // NavigationController ----------------------------------------------------
 
   // A new pending navigation has been created. Pending entries are created
   // when the user requests the navigation. We don't know if it will actually
   // happen until it does (at this point, it will be "committed." Note that
   // renderer- initiated navigations such as link clicks will never be
   // pending.
   //
   // This notification is called after the pending entry is created, but
   // before we actually try to navigate. The source will be the
@@ skipping 306 matching lines @@
   // of a temporary zoom level change, the details is an empty string.
   NOTIFICATION_ZOOM_LEVEL_CHANGED,
 
   // Custom notifications used by the embedder should start from here.
   NOTIFICATION_CONTENT_END,
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_