Have toDOMStringList() use the V8TRYCATCH_FOR_V8STRINGRESOURCE() macro

LayoutTests/storage/indexeddb/transaction-error-expected.txt

-CONSOLE MESSAGE: line 73: Uncaught Error: This should *NOT* be caught!
+CONSOLE MESSAGE: line 78: Uncaught Error: This should *NOT* be caught!
 Test IDBTransaction.error cases.
 
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
 indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB;
 
 dbname = "transaction-error.html"
 indexedDB.deleteDatabase(dbname)
 indexedDB.open(dbname)
 store = db.createObjectStore('storeName')
 store.add('value', 'key')
 
 trans = db.transaction('storeName')
 
 IDBTransaction.error should be null if transaction is not finished:
 PASS trans.error is null
 
+transaction() should throw if one of the DOMStringList items cannot be converted to a String:
+PASS db.transaction(['storeName', nonConvertibleToString]) threw exception Exception in toString().
+
 If IDBTransaction.abort() is explicitly called, IDBTransaction.error should be null:
 trans.abort()
 PASS trans.error is null
 
 If the transaction is aborted due to a request error that is not prevented, IDBTransaction.error should match:
 trans = db.transaction('storeName', 'readwrite')
 request = trans.objectStore('storeName').add('value2', 'key')
 PASS request.error.name is 'ConstraintError'
 request_error = request.error
 Transaction received abort event.
@@ skipping 27 matching lines @@
 PASS trans.error.name is 'ConstraintError'
 trans.error.message = Unable to add key to index 'Also test utf8: 漢': at least one key does not satisfy the uniqueness requirements.
 PASS trans.error.message is non-null.
 Note: This fails because of http://wkb.ug/37327
 PASS trans.error.message.indexOf(indexName) is not -1
 
 PASS successfullyParsed is true
 
 TEST COMPLETE