Expose WorkerPool to blink

third_party/WebKit/Source/platform/threading/BackgroundTaskRunner.cpp

Index: third_party/WebKit/Source/platform/threading/BackgroundTaskRunner.cpp
diff --git a/third_party/WebKit/Source/platform/threading/BackgroundTaskRunner.cpp b/third_party/WebKit/Source/platform/threading/BackgroundTaskRunner.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..e7f94edb673ed2f45c6d4ac72dd9ccc67d78bd20
--- /dev/null
+++ b/third_party/WebKit/Source/platform/threading/BackgroundTaskRunner.cpp
@@ -0,0 +1,24 @@
+// Copyright 2015 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 "config.h"
+#include "platform/threading/BackgroundTaskRunner.h"
+
+#include "base/bind.h"
+#include "base/location.h"
+#include "base/threading/worker_pool.h"
+
+namespace blink {
+
+static void RunBackgroundTask(PassOwnPtr<Closure> closure)
+{
+    (*closure)();
+}
+
+void BackgroundTaskRunner::postOnBackgroundThread(PassOwnPtr<Closure> closure, TaskSize taskSize)
+{
+    base::WorkerPool::PostTask(FROM_HERE, base::Bind(&RunBackgroundTask, closure), taskSize == TaskSizeLongRunningTask);
+}
+
+} // namespace blink