Remove remaining HTML elements

sky/engine/core/html/parser/HTMLParserThread.cpp

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "sky/engine/core/html/parser/HTMLParserThread.h"
-
-#include "base/threading/thread.h"
-#include "sky/engine/wtf/Assertions.h"
-
-namespace blink {
-
-static base::Thread* s_thread = 0;
-static base::SingleThreadTaskRunner* s_taskRunner = 0;
-
-void HTMLParserThread::start()
-{
-    ASSERT(!s_thread);
-    s_thread = new base::Thread("HTMLParserThread");
-    s_thread->Start();
-    s_thread->task_runner().swap(&s_taskRunner);
-}
-
-void HTMLParserThread::stop()
-{
-    ASSERT(s_thread);
-    base::Thread* thread = s_thread;
-    s_thread = 0;
-
-    scoped_refptr<base::SingleThreadTaskRunner> taskRunner;
-    taskRunner.swap(&s_taskRunner);
-
-    delete thread;
-    taskRunner = nullptr;
-}
-
-base::SingleThreadTaskRunner* HTMLParserThread::taskRunner()
-{
-    ASSERT(s_taskRunner);
-    return s_taskRunner;
-}
-
-} // namespace blink