Offline blacklisting for SuggestionsService.

chrome/browser/search/suggestions/proto/suggestions.proto

 // Copyright 2014 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.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
 package suggestions;
 
@@ skipping 25 matching lines @@
 
   // The URL of the favicon associated with this page.
   optional string favicon_url = 3;
 
   // The URL of the thumbnail associated with this page.
   optional string thumbnail = 4;
 
   // The provider(s) responsible for this suggestion.
   repeated ProviderId providers = 5;
 }
+
+// A list of URLs that should be filtered from the SuggestionsProfile.
+//
+// Next tag: 2
+message SuggestionsBlacklist {
+  // URLs that make up the blacklist.
+  repeated string urls = 1;
+}