Ensure that TemplateURLs removed by prepopulate search engine merging is also removed from Sync.

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>
+#include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/string16.h"
 
 class Profile;
 class TemplateURL;
 class WDTypedResult;
 class WebDataService;
 
 // Returns the short name of the default search engine, or the empty string if
 // none is set. |profile| may be NULL.
 string16 GetDefaultSearchEngineName(Profile* profile);
 
 // Processes the results of WebDataService::GetKeywords, combining it with
 // prepopulated search providers to result in:
 //  * a set of template_urls (search providers). The caller owns the
 //    TemplateURL* returned in template_urls.
 //  * the default search provider (and if *default_search_provider is not NULL,
 //    it is contained in template_urls).
 //  * whether there is a new resource keyword version (and the value).
 //    |*new_resource_keyword_version| is set to 0 if no new value. Otherwise,
 //    it is the new value.
 // Only pass in a non-NULL value for service if the WebDataService should be
-// updated.
+// updated. If |removed_keyword_guids| is not NULL, any TemplateURLs removed
+// from the keyword table in the WebDataService will have their Sync GUIDs
+// added to it.
 void GetSearchProvidersUsingKeywordResult(
     const WDTypedResult& result,
     WebDataService* service,
     Profile* profile,
     std::vector<TemplateURL*>* template_urls,
     TemplateURL** default_search_provider,
-    int* new_resource_keyword_version);
+    int* new_resource_keyword_version,
+    std::set<std::string>* removed_keyword_guids);
 
 // 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);
 
 #endif  // CHROME_BROWSER_SEARCH_ENGINES_UTIL_H_