Adding a sync_guid field to TemplateURL. Adding appropriate database migration changes and tests.

chrome/browser/search_engines/template_url.h

 // Copyright (c) 2011 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_TEMPLATE_URL_H_
 #define CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 470 matching lines @@
 
   // If this TemplateURL comes from prepopulated data the prepopulate_id is > 0.
   // SetPrepopulateId also sets any TemplateURLRef's prepopulated flag to true
   // if |id| > 0 and false otherwise.
   void SetPrepopulateId(int id);
   int prepopulate_id() const { return prepopulate_id_; }
 
   std::string GetExtensionId() const;
   bool IsExtensionKeyword() const;
 
+  std::string sync_guid() const { return sync_guid_; }
+  void set_sync_guid(const std::string& guid) { sync_guid_ = guid; }
+
  private:
   friend void MergeEnginesFromPrepopulateData(
       PrefService* prefs,
       WebDataService* service,
       std::vector<TemplateURL*>* template_urls,
       const TemplateURL** default_search_provider);
   friend class KeywordTable;
   friend class KeywordTableTest;
   friend class SearchHostToURLsMap;
   friend class TemplateURLService;
@@ skipping 26 matching lines @@
   // List of supported input encodings.
   std::vector<std::string> input_encodings_;
   TemplateURLID id_;
   base::Time date_created_;
   base::Time last_modified_;
   bool created_by_policy_;
   int usage_count_;
   SearchEngineType search_engine_type_;
   int logo_id_;
   int prepopulate_id_;
+  // The primary unique identifier for Sync. This is only set on TemplateURLs
+  // that have been associated with Sync.
+  std::string sync_guid_;
 
   // TODO(sky): Add date last parsed OSD file.
 };
 
 #endif  // CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_H_