[Suggestions] Ability to override the timeout parameter via Variations

chrome/browser/search/suggestions/suggestions_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_SEARCH_SUGGESTIONS_SUGGESTIONS_SERVICE_H_
 #define CHROME_BROWSER_SEARCH_SUGGESTIONS_SUGGESTIONS_SERVICE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 113 matching lines @@
   std::vector<ResponseCallback> waiting_requestors_;
 
   // Used to obtain server thumbnails, if available.
   scoped_ptr<ThumbnailManager> thumbnail_manager_;
 
   Profile* profile_;
 
   // For callbacks may be run after destruction.
   base::WeakPtrFactory<SuggestionsService> weak_ptr_factory_;
 
+  // Timeout (in ms) before serving requestors after a fetch suggestions request
+  // has been issued.
+  int request_timeout_ms_;
+
   DISALLOW_COPY_AND_ASSIGN(SuggestionsService);
 };
 
 }  // namespace suggestions
 
 #endif  // CHROME_BROWSER_SEARCH_SUGGESTIONS_SUGGESTIONS_SERVICE_H_