Remove WebKit::Platform dependencies from cc

cc/thread_impl.cc

+// Copyright 2011 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 "cc/thread_impl.h"
+
+#include "base/message_loop.h"
+
+namespace cc {
+
+scoped_ptr<Thread> ThreadImpl::createForCurrentThread()
+{
+    return scoped_ptr<Thread>(new ThreadImpl(base::MessageLoopProxy::current())).Pass();
+}
+
+scoped_ptr<Thread> ThreadImpl::createForDifferentThread(scoped_refptr<base::MessageLoopProxy> thread)
+{
+    return scoped_ptr<Thread>(new ThreadImpl(thread)).Pass();
+}
+
+ThreadImpl::~ThreadImpl()
+{
+}
+
+void ThreadImpl::postTask(base::Closure cb)
+{
+    m_thread->PostTask(FROM_HERE, cb);
+}
+
+void ThreadImpl::postDelayedTask(base::Closure cb, long long delayMs)
+{
+    m_thread->PostDelayedTask(FROM_HERE, cb, base::TimeDelta::FromMilliseconds(delayMs));
+}
+
+bool ThreadImpl::belongsToCurrentThread() const
+{
+  return m_thread->BelongsToCurrentThread();
+}
+
+ThreadImpl::ThreadImpl(scoped_refptr<base::MessageLoopProxy> thread)
+    : m_thread(thread)
+{
+}
+
+} // namespace cc