IndexedDB: Remove unused plumbing for string version changes

content/browser/in_process_webkit/indexed_db_database_callbacks.cc

Index: content/browser/in_process_webkit/indexed_db_database_callbacks.cc
diff --git a/content/browser/in_process_webkit/indexed_db_database_callbacks.cc b/content/browser/in_process_webkit/indexed_db_database_callbacks.cc
index 6f0ff3d98e3d6439d159b24c2ef258c3aabd54e8..c8b3f4616c9bd51484ca7386be1cbebb9aad742d 100644
--- a/content/browser/in_process_webkit/indexed_db_database_callbacks.cc
+++ b/content/browser/in_process_webkit/indexed_db_database_callbacks.cc
@@ -36,14 +36,6 @@ void IndexedDBDatabaseCallbacks::onVersionChange(long long old_version,
                                                          new_version));
 }
 
-void IndexedDBDatabaseCallbacks::onVersionChange(
-    const WebKit::WebString& requested_version) {
-  dispatcher_host_->Send(
-      new IndexedDBMsg_DatabaseCallbacksVersionChange(ipc_thread_id_,
-                                                      ipc_database_id_,
-                                                      requested_version));
-}
-
 void IndexedDBDatabaseCallbacks::onAbort(
     long long host_transaction_id,
     const WebKit::WebIDBDatabaseError& error) {