Add the base class for decoder buffers used in cast media.

chromecast/media/cma/base/decoder_buffer_wrapper.cc

Index: chromecast/media/cma/base/decoder_buffer_wrapper.cc
diff --git a/chromecast/media/cma/base/decoder_buffer_wrapper.cc b/chromecast/media/cma/base/decoder_buffer_wrapper.cc
new file mode 100644
index 0000000000000000000000000000000000000000..18cf396051909401a3ac3c4dc809b6600cbef7d7
--- /dev/null
+++ b/chromecast/media/cma/base/decoder_buffer_wrapper.cc
@@ -0,0 +1,45 @@
+// 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/media/cma/base/decoder_buffer_wrapper.h"
+
+#include "media/base/decoder_buffer.h"
+
+namespace chromecast {
+namespace media {
+
+DecoderBufferWrapper::DecoderBufferWrapper(
+    const scoped_refptr< ::media::DecoderBuffer>& buffer)
+    : buffer_(buffer) {
+}
+
+DecoderBufferWrapper::~DecoderBufferWrapper() {
+}
+
+base::TimeDelta DecoderBufferWrapper::timestamp() const {
+  return buffer_->timestamp();
+}
+
+const uint8* DecoderBufferWrapper::data() const {
+  return buffer_->data();
+}
+
+uint8* DecoderBufferWrapper::writable_data() const {
+  return buffer_->writable_data();
+}
+
+int DecoderBufferWrapper::data_size() const {
+  return buffer_->data_size();
+}
+
+const ::media::DecryptConfig* DecoderBufferWrapper::decrypt_config() const {
+  return buffer_->decrypt_config();
+}
+
+bool DecoderBufferWrapper::end_of_stream() const {
+  return buffer_->end_of_stream();
+}
+
+}  // namespace media
+}  // namespace chromecast