Dartifying remainder of Index DB APIs.

tools/dom/templates/html/dart2js/impl_IDBDatabase.darttemplate

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-part of $LIBRARYNAME;
-
-$(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
-
-  Transaction transaction(storeName_OR_storeNames, String mode) {
-    if (mode != 'readonly' && mode != 'readwrite') {
-      throw new ArgumentError(mode);
-    }
-
-    // TODO(sra): Ensure storeName_OR_storeNames is a string or List<String>,
-    // and copy to JavaScript array if necessary.
-
-    // Try and create a transaction with a string mode.  Browsers that expect a
-    // numeric mode tend to convert the string into a number.  This fails
-    // silently, resulting in zero ('readonly').
-    return _transaction(storeName_OR_storeNames, mode);
-  }
-
-  @JSName('transaction')
-  Transaction _transaction(stores, mode) native;
-
-$!MEMBERS}