Add some ArgumentError and RangeError constructors that capture more information.

sdk/lib/web_sql/dartium/web_sql_dartium.dart

Index: sdk/lib/web_sql/dartium/web_sql_dartium.dart
diff --git a/sdk/lib/web_sql/dartium/web_sql_dartium.dart b/sdk/lib/web_sql/dartium/web_sql_dartium.dart
index e976cde05415cc64c227a42489114561f0453bb7..9bea22c50b0ca2296c78d6ded49aaedf0ea83b7c 100644
--- a/sdk/lib/web_sql/dartium/web_sql_dartium.dart
+++ b/sdk/lib/web_sql/dartium/web_sql_dartium.dart
@@ -252,7 +252,7 @@ class SqlResultSetRowList extends NativeFieldWrapperClass2 with ListMixin<Map>,
 
   Map operator[](int index) {
     if (index < 0 || index >= length)
-      throw new RangeError.range(index, 0, length);
+      throw new RangeError.index(index, this);
     return _blink.BlinkSQLResultSetRowList.instance.item_Callback_1_(this, index);
   }