Take advantage of the new Pass() machinery on scoped_ptr{,_malloc}.

media/filters/chunk_demuxer.cc

Index: media/filters/chunk_demuxer.cc
diff --git a/media/filters/chunk_demuxer.cc b/media/filters/chunk_demuxer.cc
index 64fad537ae5a3f77b95919f37fcda0351c1fcc3b..b73e12655d05bfca2a8a961f665c2178c2fcbfb9 100644
--- a/media/filters/chunk_demuxer.cc
+++ b/media/filters/chunk_demuxer.cc
@@ -56,7 +56,9 @@ static const uint8 kEmptyCluster[] = {
 };
 
 // Create an "end of stream" buffer.
-static Buffer* CreateEOSBuffer() { return new DataBuffer(0, 0); }
+static Buffer* CreateEOSBuffer() {
+  return new DataBuffer(0);
+}
 
 class ChunkDemuxerStream : public DemuxerStream {
  public: