Don't use `LinkedList` in the core libraries anymore.

sdk/lib/web_sql/dartium/web_sql_dartium.dart

 /**
  * An API for storing data in the browser that can be queried with SQL.
  *
  * **Caution:** this specification is no longer actively maintained by the Web
  * Applications Working Group and may be removed at any time.
  * See [the W3C Web SQL Database specification](http://www.w3.org/TR/webdatabase/)
  * for more information.
  *
  * The [dart:indexed_db] APIs is a recommended alternatives.
  */
 library dart.dom.web_sql;
 
 import 'dart:async';
-import 'dart:collection';
+import 'dart:collection' hide LinkedList, LinkedListEntry;
 import 'dart:_internal';
 import 'dart:html';
 import 'dart:html_common';
 import 'dart:nativewrappers';
 import 'dart:_blink' as _blink;
 import 'dart:js' as js;
 
 // DO NOT EDIT - unless you are editing documentation as per:
 // https://code.google.com/p/dart/wiki/ContributingHTMLDocumentation
 // Auto-generated dart:audio library.
@@ skipping 358 matching lines @@
     if (arguments != null) {
       _blink.BlinkSQLTransaction.instance
           .executeSql_Callback_2_(this, sqlStatement, arguments);
       return;
     }
     _blink.BlinkSQLTransaction.instance
         .executeSql_Callback_1_(this, sqlStatement);
     return;
   }
 }