Most visited iframe now postMessage to signal the iframing page that the link has been displayed

chrome/browser/resources/local_ntp/most_visited_util.js

Index: chrome/browser/resources/local_ntp/most_visited_util.js
diff --git a/chrome/browser/resources/local_ntp/most_visited_util.js b/chrome/browser/resources/local_ntp/most_visited_util.js
index 5a17fbd10bfff9b4e35d23d64c78312cf3c70ac5..5a22d5fc76142a97ff0ce87b680f74594b388638 100644
--- a/chrome/browser/resources/local_ntp/most_visited_util.js
+++ b/chrome/browser/resources/local_ntp/most_visited_util.js
@@ -22,18 +22,24 @@ var NTP_LOGGING_EVENT_TYPE = {
   // There was an error in loading both the thumbnail image and the fallback
   // (if it was provided), resulting in a grey tile.
   NTP_THUMBNAIL_ERROR: 2,
-  // The page attempted to load a thumbnail URL while a fallback thumbnail was
-  // provided.
-  NTP_FALLBACK_THUMBNAIL_REQUESTED: 3,
-  // The primary thumbnail image failed to load and caused us to use the
-  // secondary thumbnail as a fallback.
-  NTP_FALLBACK_THUMBNAIL_USED: 4,
+  // DEPRECATED: NTP_FALLBACK_THUMBNAIL_REQUESTED: 3,

[Mathieu, 2014/01/09 18:37:18]

let's remove them?

[beaudoin, 2014/01/15 23:39:56]

Done.

+  // DEPRECATED: NTP_FALLBACK_THUMBNAIL_USED_DEPRECATED: 4,
   // The suggestion is coming from the server.
   NTP_SERVER_SIDE_SUGGESTION: 5,
   // The suggestion is coming from the client.
   NTP_CLIENT_SIDE_SUGGESTION: 6,
   // The visuals of that tile are handled externally by the page itself.
-  NTP_EXTERNAL_TILE: 7
+  NTP_EXTERNAL_TILE: 7,
+  // Indicates a tile was rendered, no matter if it's a thumbnail, a gray tile
+  // or an external tile.
+  NTP_TILE: 8,
+  // Used when no thumbnail is specified and a gray tile with the domain is used
+  // as the main tile.
+  NTP_GRAY_TILE: 9,
+  // Used a gray tile with the domain as the fallback for a failed thumbnail.
+  NTP_GRAY_TILE_FALLBACK: 10,
+  // The visuals of that tile's fallback are handled externally.
+  NTP_EXTERNAL_FALLBACK: 11
 };
 
 /**