NTP: Record TileType metrics also on desktop

chrome/common/instant.mojom

 // Copyright 2016 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.
 
 module chrome.mojom;
 
 import "mojo/common/string16.mojom";
 import "mojo/common/time.mojom";
 import "url/mojo/url.mojom";
 
 [Native]
 enum NTPLoggingEventType;
 
 [Native]
 enum OmniboxFocusState;
 
 [Native]
 enum TileSource;
 
+[Native]
+enum TileVisualType;
+
 // Interface used to connect to the embedded search interface. This is a
 // separate interface such that a reverse connection (|client| below) can be
 // passed when connecting.
 interface EmbeddedSearchConnector {
   // Connect to the interface. |instant| is the connection which the client will
   // use to query the embedded search interface. |client| is the connection used
   // by the embedded search interface implementation to push browser state
   // updates to the client.
   Connect(associated Instant& instant, associated SearchBox client);
 };
@@ skipping 20 matching lines @@
   UndoMostVisitedDeletion(int32 page_seq_no, url.mojom.Url url);
 
   // Logs events from InstantExtended New Tab Pages.
   LogEvent(int32 page_seq_no,
            NTPLoggingEventType event,
            mojo.common.mojom.TimeDelta time);
 
   // Logs an impression on one of the Most Visited tile on the InstantExtended
   // New Tab Page.
   LogMostVisitedImpression(int32 page_seq_no, int32 position,
-                           TileSource tile_source);
+                           TileSource tile_source,
+                           TileVisualType tile_type);
 
   // Logs a navigation on one of the Most Visited tile on the InstantExtended
   // New Tab Page.
   LogMostVisitedNavigation(int32 page_seq_no, int32 position,
-                           TileSource tile_source);
+                           TileSource tile_source,
+                           TileVisualType tile_type);
 
   // Tells InstantExtended to paste text into the omnibox.  If text is empty,
   // the clipboard contents will be pasted. This causes the omnibox dropdown to
   // open.
   PasteAndOpenDropdown(int32 page_seq_no,
                        mojo.common.mojom.String16 text_to_be_pasted);
 
   // The Instant page asks whether the user syncs its history.
   HistorySyncCheck(int32 page_seq_no);
 
@@ skipping 39 matching lines @@
 
   ThemeChanged(ThemeBackgroundInfo value);
 
   // TODO(treib): Remove the *Result methods and instead add return values to
   // the correspnding methods in the Instant interface above.
   HistorySyncCheckResult(bool sync_history);
 
   ChromeIdentityCheckResult(mojo.common.mojom.String16 identity,
                             bool identity_match);
 };