Support for parsing encrypted WebM streams by src.

webkit/media/filter_helpers.h

 // Copyright (c) 2012 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 WEBKIT_MEDIA_FILTER_HELPERS_H_
 #define WEBKIT_MEDIA_FILTER_HELPERS_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
+// TODO(fgalligan): Remove the dependency on FFmpeg.
+#include "media/filters/ffmpeg_demuxer.h"
 
 namespace base {
 class MessageLoopProxy;
 }
 
 namespace media {
 class ChunkDemuxer;
 class DataSource;
 class FFmpegVideoDecoder;
 class FilterCollection;
 }
 
 namespace webkit_media {
 
 // Builds the required filters for handling media source URLs, adds them to
 // |filter_collection|.
 void BuildMediaSourceCollection(
     const scoped_refptr<media::ChunkDemuxer>& demuxer,
     const scoped_refptr<base::MessageLoopProxy>& message_loop,
     media::FilterCollection* filter_collection);
 
 // Builds the required filters for handling regular URLs and adds them to
 // |filter_collection| and fills |video_decoder| returning true if successful.
 void BuildDefaultCollection(
     const scoped_refptr<media::DataSource>& data_source,
     const scoped_refptr<base::MessageLoopProxy>& message_loop,
-    media::FilterCollection* filter_collection);
+    media::FilterCollection* filter_collection,
+    const media::FFmpegNeedKeyCB& need_key_cb);
 
 }  // webkit_media
 
 #endif  // WEBKIT_MEDIA_FILTER_HELPERS_H_