Expand overloaded methods and optional parameters in the html library.

sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart

Index: sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart
diff --git a/sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart b/sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart
index 9dd0d9a6f6a4810a54abfb6379801cd2095a1dc7..c7d0bb6b0c2466b05c235046b3e9cb706def7aea 100644
--- a/sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart
+++ b/sdk/lib/indexed_db/dart2js/indexed_db_dart2js.dart
@@ -267,6 +267,31 @@ class Database extends EventTarget native "IDBDatabase" {
     return _transaction(storeName_OR_storeNames, mode);
   }
 
+  Transaction transactionString(String storeName, String mode) {

[blois, 2013/06/24 16:58:02]

can this be transactionStore and transactionStores?

[Emily Fortuna, 2013/06/25 03:53:31]

Done.

+    if (mode != 'readonly' && mode != 'readwrite') {
+      throw new ArgumentError(mode);
+    }
+    // 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, mode);
+  }
+
+  Transaction transactionList(List<String> storeNames, String mode) {
+    if (mode != 'readonly' && mode != 'readwrite') {
+      throw new ArgumentError(mode);
+    }
+    List storeNames_1 = convertDartToNative_StringArray(storeNames);
+    return _transaction(storeNames_1, mode);
+  }
+  
+  Transaction transactionStringList(DomStringList storeNames, String mode) {
+    if (mode != 'readonly' && mode != 'readwrite') {
+      throw new ArgumentError(mode);
+    }
+    return _transaction(storeNames_1, mode);
+  }
+
   @JSName('transaction')
   Transaction _transaction(stores, mode) native;