Track context menu creation for suggestions.

chrome/android/java/src/org/chromium/chrome/browser/ntp/MostVisitedItem.java

 // Copyright 2015 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.
 
 package org.chromium.chrome.browser.ntp;
 
 import android.view.ContextMenu;
 import android.view.ContextMenu.ContextMenuInfo;
 import android.view.View;
 import android.view.View.OnClickListener;
@@ skipping 153 matching lines @@
 
                     @Override
                     public String getUrl() {
                         return MostVisitedItem.this.getUrl();
                     }
 
                     @Override
                     public boolean isItemSupported(@ContextMenuItemId int menuItemId) {
                         return true;
                     }
+
+                    @Override
+                    public void onContextMenuCreated() {}
                 });
     }
 
     @Override
     public void onClick(View v) {
         mManager.openMostVisitedItem(WindowOpenDisposition.CURRENT_TAB, MostVisitedItem.this);
     }
 }