Unbreak frog html tests

lib/html/frog/html_frog.dart

Index: lib/html/frog/html_frog.dart
diff --git a/lib/html/frog/html_frog.dart b/lib/html/frog/html_frog.dart
index bafd565ac59197eec44ad315cc3ab6b58b12eb40..d09988ebfb5503f4ede88ff0d3cae93bde1776ad 100644
--- a/lib/html/frog/html_frog.dart
+++ b/lib/html/frog/html_frog.dart
@@ -7515,8 +7515,6 @@ class _IDBDatabaseImpl extends _EventTargetImpl implements IDBDatabase native "*
     return txn;
   }
 
-  static var _transaction_fn;  // Assigned one of the following:
-
   static _IDBTransactionImpl _transaction_string_mode(_IDBDatabaseImpl db, stores, mode) {
     return db._transaction(stores, mode);
   }
@@ -7557,6 +7555,10 @@ class _IDBDatabaseImpl extends _EventTargetImpl implements IDBDatabase native "*
   _IDBVersionChangeRequestImpl setVersion(String version) native;
 }
 
+// TODO(sra): This should be a static member of _IDBTransactionImpl but frog
+// can't handle that.  Move it back after frog is completely done.
+var _transaction_fn;  // Assigned one of the static methods.
+
 class _IDBDatabaseEventsImpl extends _EventsImpl implements IDBDatabaseEvents {
   _IDBDatabaseEventsImpl(_ptr) : super(_ptr);