[Chromecast] Add CmaMediaRendererFactory and IPC proxy components

chromecast/common/media/shared_memory_chunk.cc

+// 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 "chromecast/common/media/shared_memory_chunk.h"
+
+#include "base/memory/shared_memory.h"
+
+namespace chromecast {
+namespace media {
+
+SharedMemoryChunk::SharedMemoryChunk(
+    scoped_ptr<base::SharedMemory> shared_mem,
+    size_t size)
+    : shared_mem_(shared_mem.Pass()),
+      size_(size) {
+}
+
+SharedMemoryChunk::~SharedMemoryChunk() {
+}
+
+void* SharedMemoryChunk::data() const {
+  return shared_mem_->memory();
+}
+
+size_t SharedMemoryChunk::size() const {
+  return size_;
+}
+
+bool SharedMemoryChunk::valid() const {
+  return true;
+}
+
+}  // namespace media
+}  // namespace chromecast
+