Load CMA backend from shared library

chromecast/public/task_runner.h

Index: chromecast/public/task_runner.h
diff --git a/chromecast/public/task_runner.h b/chromecast/public/task_runner.h
new file mode 100644
index 0000000000000000000000000000000000000000..ae5c35e81cbfe82b13f555ac1166ea03b0547200
--- /dev/null
+++ b/chromecast/public/task_runner.h
@@ -0,0 +1,34 @@
+// Copyright (c) 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.
+
+#ifndef CHROMECAST_PUBLIC_TASK_RUNNER_H_
+#define CHROMECAST_PUBLIC_TASK_RUNNER_H_
+
+#include "time_delta.h"
+
+namespace chromecast {
+
+// Provides a way for vendor libraries to run code on a specific thread.
+// For example, used in media APIs to allow code to be run on the media thread.
+class TaskRunner {
+ public:
+  // Subclass and implement 'Run' to supply code to be run by PostTask or
+  // PostDelayedTask.  They both take ownership of the Task object passed in
+  // and will delete after running the Task.
+  class Task {
+   public:
+    virtual ~Task() {}
+    virtual void Run() = 0;
+  };
+
+  virtual ~TaskRunner() {}
+
+  virtual bool BelongsToCurrentThread() = 0;
+  virtual bool PostTask(Task* task) = 0;

[byungchul, 2015/07/27 18:22:23]

Not necessary. Let's reduce # of public APIs.

[halliwell, 2015/07/28 02:19:36]

Done.

+  virtual bool PostDelayedTask(Task* task, TimeDelta delay) = 0;
+};
+
+}  // namespace chromecast
+
+#endif  // CHROMECAST_PUBLIC_TASK_RUNNER_H_