[Sync] Move some extension-sync-related logic to ExtensionService

chrome/browser/sync/glue/extension_sync.h

Index: chrome/browser/sync/glue/extension_sync.h
diff --git a/chrome/browser/sync/glue/extension_sync.h b/chrome/browser/sync/glue/extension_sync.h
index 494c02d2cb30bb4791dae418ddece8d5c4e62594..e1f3f15d3b755b8d2884f091115fc589dd6f87be 100644
--- a/chrome/browser/sync/glue/extension_sync.h
+++ b/chrome/browser/sync/glue/extension_sync.h
@@ -76,16 +76,6 @@ void RemoveServerData(const ExtensionSyncTraits& traits,
                       const std::string& id,
                       sync_api::UserShare* user_share);
 
-// Starts updating the client data from the given server data.
-void UpdateClient(const ExtensionSyncTraits& traits,
-                  const sync_pb::ExtensionSpecifics& server_data,
-                  ExtensionServiceInterface* extensions_service);
-
-// Removes existing client data for the given extension.
-void RemoveFromClient(const ExtensionSyncTraits& traits,
-                      const std::string& id,
-                      ExtensionServiceInterface* extensions_service);
-
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_EXTENSION_SYNC_H_