NOT FOR REVIEW: Adding prioritized incoming task queue to renderers

base/message_loop/high_priority_task_runner.cc

Index: base/message_loop/high_priority_task_runner.cc
diff --git a/base/message_loop/high_priority_task_runner.cc b/base/message_loop/high_priority_task_runner.cc
new file mode 100644
index 0000000000000000000000000000000000000000..21b4160d640301a31b51c45a98a704ad9cedf1c7
--- /dev/null
+++ b/base/message_loop/high_priority_task_runner.cc
@@ -0,0 +1,33 @@
+// 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 "base/message_loop/high_priority_task_runner.h"
+
+#include "base/logging.h"
+#include "base/message_loop/incoming_task_queue.h"
+#include "base/pending_task.h"
+
+namespace base {
+
+HighPriorityTaskRunner::HighPriorityTaskRunner(MessageLoop* message_loop)
+    : incoming_queue_(new internal::IncomingTaskQueue(message_loop)) {
+  DCHECK(message_loop);
+}
+
+HighPriorityTaskRunner::~HighPriorityTaskRunner() {
+}
+
+void HighPriorityTaskRunner::PostTask(
+    const tracked_objects::Location& from_here,
+    const Closure& task) {
+  incoming_queue_->AddToIncomingQueue(
+      from_here, task, TimeDelta(), false);
+}
+
+void HighPriorityTaskRunner::ReloadWorkQueue(TaskQueue* target_work_queue) {
+  DCHECK(target_work_queue && target_work_queue->empty());
+  incoming_queue_->ReloadWorkQueue(target_work_queue);
+}
+
+}  // namespace base