De-dupe input encodings in TemplateURLs.

chrome/browser/search_engines/util.h

 // Copyright (c) 2012 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_ENGINES_UTIL_H_
 #define CHROME_BROWSER_SEARCH_ENGINES_UTIL_H_
 #pragma once
 
 // This file contains utility functions for search engine functionality.
 #include <set>
@@ skipping 28 matching lines @@
 // added to it.
 void GetSearchProvidersUsingKeywordResult(
     const WDTypedResult& result,
     WebDataService* service,
     Profile* profile,
     TemplateURLService::TemplateURLVector* template_urls,
     TemplateURL** default_search_provider,
     int* new_resource_keyword_version,
     std::set<std::string>* removed_keyword_guids);
 
+// Due to a bug, the |input_encodings| field of TemplateURLData could have
+// contained duplicate entries.  This removes those entries and returns whether
+// any were found.
+bool DeDupeEncodings(std::vector<std::string>* encodings);
+
 // Returns true if the default search provider setting has been changed or
 // corrupted. Returns the backup setting in |backup_default_search_provider|.
 // |*backup_default_search_provider| can be NULL if the original setting is
 // lost.
 bool DidDefaultSearchProviderChange(
     const WDTypedResult& result,
     Profile* profile,
     scoped_ptr<TemplateURL>* backup_default_search_provider);
 
 // Removes (and deletes) TemplateURLs from |template_urls| and |service| if they
 // have duplicate prepopulate ids. If |removed_keyword_guids| is not NULL, the
 // Sync GUID of each item removed from the DB will be added to it. This is a
 // helper used by GetSearchProvidersUsingKeywordResult(), but is declared here
 // so it's accessible by unittests.
 void RemoveDuplicatePrepopulateIDs(
     WebDataService* service,
     const ScopedVector<TemplateURL>& prepopulated_urls,
     TemplateURL* default_search_provider,
     TemplateURLService::TemplateURLVector* template_urls,
     std::set<std::string>* removed_keyword_guids);
 
 #endif  // CHROME_BROWSER_SEARCH_ENGINES_UTIL_H_