Load CMA backend from shared library

chromecast/media/cma/pipeline/media_component_device_client_impl.cc

Index: chromecast/media/cma/pipeline/media_component_device_client_impl.cc
diff --git a/chromecast/media/cma/pipeline/media_component_device_client_impl.cc b/chromecast/media/cma/pipeline/media_component_device_client_impl.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e81ec0ad694478c5bf6276ef6fb880090c9c8e06
--- /dev/null
+++ b/chromecast/media/cma/pipeline/media_component_device_client_impl.cc
@@ -0,0 +1,31 @@
+// 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 "chromecast/media/cma/pipeline/media_component_device_client_impl.h"
+
+#include "base/bind.h"
+#include "base/location.h"
+#include "base/single_thread_task_runner.h"
+#include "base/thread_task_runner_handle.h"
+
+namespace chromecast {
+namespace media {
+
+MediaComponentDeviceClientImpl::MediaComponentDeviceClientImpl(
+    const base::Closure& eos_cb)
+    : eos_cb_(eos_cb), task_runner_(base::ThreadTaskRunnerHandle::Get()) {}
+
+MediaComponentDeviceClientImpl::~MediaComponentDeviceClientImpl() {}
+
+void MediaComponentDeviceClientImpl::OnEndOfStream() {
+  if (task_runner_->BelongsToCurrentThread()) {
+    if (!eos_cb_.is_null())
+      eos_cb_.Run();
+  } else {
+    task_runner_->PostTask(FROM_HERE, eos_cb_);
+  }
+}
+
+}  // namespace media
+}  // namespace chromecast