Move DataSourceHost to BufferedDataSourceHost.

content/renderer/media/buffered_data_source_host_impl.h

+// Copyright 2013 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.
+
+#ifndef CONTENT_RENDERER_MEDIA_BUFFERED_DATA_SOURCE_HOST_IMPL_H_
+#define CONTENT_RENDERER_MEDIA_BUFFERED_DATA_SOURCE_HOST_IMPL_H_
+
+#include "content/common/content_export.h"
+#include "content/renderer/media/buffered_data_source.h"
+
+namespace content {
+
+class CONTENT_EXPORT BufferedDataSourceHostImpl
+    : public BufferedDataSourceHost {
+ public:
+  BufferedDataSourceHostImpl(media::Pipeline pipeline);
+  ~BufferedDataSourceHostImpl() {};
+
+  // BufferedDataSourceHost implementation.
+  virtual void SetTotalBytes(int64 total_bytes) OVERRIDE;
+  virtual void AddBufferedByteRange(int64 start, int64 end) OVERRIDE;
+
+  // Combined time ranges from the BufferedDataSource and the demuxer.
+  const blink::WebTimeRanges& BufferedTimeRanges();
+
+  // Combined loading progress.
+  // TODO(sandersd): Change this to non-const along with WMPI's version.
+  // http://crbug.com/360251
+  bool DidLoadingProgress() const;
+
+ private:
+  // TODO(sandersd): Remove this cache. http://crbug.com/360254
+  blink::WebTimeRanges buffered_;
+
+  // Total size of the data source.
+  int64 total_bytes_;
+
+  // List of buffered byte ranges for estimating buffered time.
+  media::Ranges<int64> buffered_byte_ranges_;
+
+  // True when AddBufferedByteRange() has been called more recently than
+  // didLoadingProgress().
+  mutable bool did_loading_progress_;
+
+  DISALLOW_COPY_AND_ASSIGN(BufferedDataSourceHostImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_BUFFERED_DATA_SOURCE_HOST_IMPL_H_