Add Chromium-side changes for MediaSource::isTypeSupported()

media/filters/stream_parser_factory.h

Index: media/filters/stream_parser_factory.h
diff --git a/media/filters/stream_parser_factory.h b/media/filters/stream_parser_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..ccf394150bcd73978452d313b7c18d7c74951a86
--- /dev/null
+++ b/media/filters/stream_parser_factory.h
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+// Copyright (c) 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 MEDIA_FILTERS_STREAM_PARSER_FACTORY_H_
+#define MEDIA_FILTERS_STREAM_PARSER_FACTORY_H_
+
+#include <string>
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "media/base/media_export.h"
+#include "media/base/media_log.h"
+
+namespace media {
+
+class StreamParser;
+
+class MEDIA_EXPORT StreamParserFactory {
+ public:
+  // Checks to see if the specified |type| and |codecs| list are supported.
+  // Returns true if |type| and all codecs listed in |codecs| are supported.
+  static bool IsTypeSupported(
+      const std::string& type, const std::vector<std::string>& codecs);
+
+  // Creates a new StreamParser object if the specified |type| and |codecs| list
+  // are supported. |log_cb| can be used to report errors if there is something
+  // wrong with |type| or the codec IDs in |codecs|.
+  // Returns a new StreamParser object if |type| and all codecs listed in
+  //   |codecs| are supported.
+  //   |has_audio| is true if an audio codec was specified.
+  //   |has_video| is true if a video codec was specified.
+  // Returns NULL otherwise. The values of |has_audio| and |has_video| are
+  //   undefined.
+  static scoped_ptr<media::StreamParser> Create(
+      const std::string& type, const std::vector<std::string>& codecs,
+      const LogCB& log_cb, bool* has_audio, bool* has_video);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_FILTERS_STREAM_PARSER_FACTORY_H_