Expand overloaded methods and optional parameters in the html library.

sdk/lib/indexed_db/dartium/indexed_db_dartium.dart

Index: sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
diff --git a/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart b/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
index d33a30ece459ecd7d6962f7f8e6b810e06804df0..ec478ed3fa7775945692fc57ce50a8faedd3eb7e 100644
--- a/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
+++ b/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
@@ -192,24 +192,17 @@ class Database extends EventTarget {
   @DocsEditable
   void $dom_removeEventListener(String type, EventListener listener, [bool useCapture]) native "IDBDatabase_removeEventListener_Callback";
 
-  Transaction transaction(storeName_OR_storeNames, String mode) {
-    if ((mode is String || mode == null) && (storeName_OR_storeNames is List<String> || storeName_OR_storeNames == null)) {
-      return _transaction_1(storeName_OR_storeNames, mode);
-    }
-    if ((mode is String || mode == null) && (storeName_OR_storeNames is List<String> || storeName_OR_storeNames == null)) {
-      return _transaction_2(storeName_OR_storeNames, mode);
-    }
-    if ((mode is String || mode == null) && (storeName_OR_storeNames is String || storeName_OR_storeNames == null)) {
-      return _transaction_3(storeName_OR_storeNames, mode);
-    }
-    throw new ArgumentError("Incorrect number or type of arguments");
-  }
-
-  Transaction _transaction_1(storeName_OR_storeNames, mode) native "IDBDatabase__transaction_1_Callback";
+  @DomName('IDBDatabase.transaction')
+  @DocsEditable
+  Transaction transaction(String storeName, String mode) native "IDBDatabase_transaction_Callback";
 
-  Transaction _transaction_2(storeName_OR_storeNames, mode) native "IDBDatabase__transaction_2_Callback";
+  @DomName('IDBDatabase.transactionList')
+  @DocsEditable
+  Transaction transactionList(List<String> storeNames, String mode) native "IDBDatabase_transactionList_Callback";
 
-  Transaction _transaction_3(storeName_OR_storeNames, mode) native "IDBDatabase__transaction_3_Callback";
+  @DomName('IDBDatabase.transactionStringList')
+  @DocsEditable
+  Transaction transactionStringList(List<String> storeNames, String mode) native "IDBDatabase_transactionStringList_Callback";
 
   @DomName('IDBDatabase.onabort')
   @DocsEditable