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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_COMMON_NTP_LOGGING_EVENTS_H_
      6 #define CHROME_COMMON_NTP_LOGGING_EVENTS_H_
      7 
      8 // The different types of events that are logged from the NTP. This enum is used
      9 // to transfer information from the NTP javascript to the renderer and is not
     10 // used as a UMA enum histogram's logged value.
     11 // Note: Keep in sync with browser/resources/local_ntp/most_visited_utils.js
     12 enum NTPLoggingEventType {
     13   // The suggestion is coming from the server.
     14   NTP_SERVER_SIDE_SUGGESTION = 0,
     15 
     16   // The suggestion is coming from the client.
     17   NTP_CLIENT_SIDE_SUGGESTION = 1,
     18 
     19   // Indicates a tile was rendered, no matter if it's a thumbnail, a gray tile
     20   // or an external tile.
     21   NTP_TILE = 2,
     22 
     23   // The tile uses a local thumbnail image.
     24   NTP_THUMBNAIL_TILE = 3,
     25 
     26   // Used when no thumbnail is specified and a gray tile with the domain is used
     27   // as the main tile.
     28   NTP_GRAY_TILE = 4,
     29 
     30   // The visuals of that tile are handled externally by the page itself.
     31   NTP_EXTERNAL_TILE = 5,
     32 
     33   // There was an error in loading both the thumbnail image and the fallback
     34   // (if it was provided), resulting in a grey tile.
     35   NTP_THUMBNAIL_ERROR = 6,
     36 
     37   // Used a gray tile with the domain as the fallback for a failed thumbnail.
     38   NTP_GRAY_TILE_FALLBACK = 7,
     39 
     40   // The visuals of that tile's fallback are handled externally.
     41   NTP_EXTERNAL_TILE_FALLBACK = 8,
     42 
     43   // The user moused over an NTP tile or title.
     44   NTP_MOUSEOVER = 9,
     45 
     46   NTP_NUM_EVENT_TYPES
     47 };
     48 
     49 #endif  // CHROME_COMMON_NTP_LOGGING_EVENTS_H_
     50