IWYU for base/memory/scoped_vector.h.

components/search_engines/util.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 COMPONENTS_SEARCH_ENGINES_UTIL_H_
 #define COMPONENTS_SEARCH_ENGINES_UTIL_H_
 
 // This file contains utility functions for search engine functionality.
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "components/search_engines/template_url_service.h"
 
+template <typename T>
+class ScopedVector;
+
 class KeywordWebDataService;
 class PrefService;
 class TemplateURL;
 class WDTypedResult;
 
 // Returns the short name of the default search engine, or the empty string if
 // none is set.
 base::string16 GetDefaultSearchEngineName(TemplateURLService* service);
 
 // Returns a GURL that searches for |terms| using the default search engine of
@@ skipping 100 matching lines @@
 // so it's accessible by unittests.
 void RemoveDuplicatePrepopulateIDs(
     KeywordWebDataService* service,
     const ScopedVector<TemplateURLData>& prepopulated_urls,
     TemplateURL* default_search_provider,
     TemplateURLService::TemplateURLVector* template_urls,
     const SearchTermsData& search_terms_data,
     std::set<std::string>* removed_keyword_guids);
 
 #endif  // COMPONENTS_SEARCH_ENGINES_UTIL_H_