Change ChunkDemuxerStream/SourceBufferStream memory limit to size_t type

media/filters/chunk_demuxer.h

Index: media/filters/chunk_demuxer.h
diff --git a/media/filters/chunk_demuxer.h b/media/filters/chunk_demuxer.h
index cdf2e524c812e906459ee7b7136f39520fd1e60a..b856a2950b69377d382052545a239135e54aae18 100644
--- a/media/filters/chunk_demuxer.h
+++ b/media/filters/chunk_demuxer.h
@@ -11,6 +11,7 @@
 #include <utility>
 #include <vector>
 
+#include "base/basictypes.h"
 #include "base/synchronization/lock.h"
 #include "media/base/byte_queue.h"
 #include "media/base/demuxer.h"
@@ -94,9 +95,7 @@ class MEDIA_EXPORT ChunkDemuxerStream : public DemuxerStream {
   TextTrackConfig text_track_config();
 
   // Sets the memory limit, in bytes, on the SourceBufferStream.
-  void set_memory_limit(int memory_limit) {
-    stream_->set_memory_limit(memory_limit);
-  }
+  void SetStreamMemoryLimit(size_t memory_limit);
 
   bool supports_partial_append_window_trimming() const {
     return partial_append_window_trimming_enabled_;
@@ -277,7 +276,7 @@ class MEDIA_EXPORT ChunkDemuxer : public Demuxer {
   // Sets the memory limit on each stream of a specific type.
   // |memory_limit| is the maximum number of bytes each stream of type |type|
   // is allowed to hold in its buffer.
-  void SetMemoryLimits(DemuxerStream::Type type, int memory_limit);
+  void SetMemoryLimits(DemuxerStream::Type type, size_t memory_limit);
 
   // Returns the ranges representing the buffered data in the demuxer.
   // TODO(wolenetz): Remove this method once MediaSourceDelegate no longer