Adding ChunkDemuxer implementation.

media/base/buffers.cc

Index: media/base/buffers.cc
diff --git a/media/base/buffers.cc b/media/base/buffers.cc
index ab66b9adbd2156be59e3b83cc137ae1cf7d9e22a..89f38776ec0d1b8628b014be561840293e522a08 100644
--- a/media/base/buffers.cc
+++ b/media/base/buffers.cc
@@ -4,6 +4,8 @@
 
 #include "media/base/buffers.h"
 
+#include "base/logging.h"
+
 namespace media {
 
 const base::TimeDelta kNoTimestamp =
@@ -17,4 +19,28 @@ bool Buffer::IsEndOfStream() const {
   return GetData() == NULL;
 }
 
+BufferImpl::BufferImpl(const base::TimeDelta& timestamp,
+                       const base::TimeDelta& duration,
+                       const uint8* data, size_t size)
+    : size_(size) {
+  SetTimestamp(timestamp);
+  SetDuration(duration);
+
+  if (!data) {
+    DCHECK_EQ(size, 0u);
+    data_ = NULL;
+    return;
+  }
+
+  DCHECK_GT(size, 0u);
+  data_ = new uint8[size];
+  memcpy(data_, data, size);
+}
+
+BufferImpl::~BufferImpl() { delete data_; }
+
+// Buffer implementation.
+const uint8* BufferImpl::GetData() const { return data_; }
+size_t BufferImpl::GetDataSize() const { return size_; }
+
 }  // namespace media