Squashed commit of the following:

commit ed615e2803839ef28e0eab50d17844c207083ad6
Author: Andreas Huber <andih@google.com>
Date:   Fri Mar 18 12:38:30 2011 -0700

    Support for live streaming of webm content over http.

    Change-Id: Ie9ebd23d2c44d192d348b9fa3f3a0f3f28ac9e4c

commit 9c50b1392471a3d652b4a875c823bee854f8855b
Author: Andreas Huber <andih@google.com>
Date:   Thu Mar 17 13:33:22 2011 -0700

    Upgrade to the latest version of libwebm.

    Change-Id: Ic7965dda84131a38f9d3c72b6acd2025ace939ce

Change-Id: I3c993a89f749f05741594ef0ea47864e17ee783b

1 files changed, 9 insertions, 0 deletions

diff --git a/media/libstagefright/matroska/MatroskaExtractor.h b/media/libstagefright/matroska/MatroskaExtractor.h
index fa20b84..38ebd61 100644
--- a/media/libstagefright/matroska/MatroskaExtractor.h
+++ b/media/libstagefright/matroska/MatroskaExtractor.h
@@ -20,6 +20,7 @@
 
 #include <media/stagefright/MediaExtractor.h>
 #include <utils/Vector.h>
+#include <utils/threads.h>
 
 namespace mkvparser {
 struct Segment;
@@ -45,26 +46,34 @@ struct MatroskaExtractor : public MediaExtractor {
 
     virtual sp<MetaData> getMetaData();
 
+    virtual uint32_t flags() const;
+
 protected:
     virtual ~MatroskaExtractor();
 
 private:
     friend struct MatroskaSource;
+    friend struct BlockIterator;
 
     struct TrackInfo {
         unsigned long mTrackNum;
         sp<MetaData> mMeta;
     };
+
+    Mutex mLock;
     Vector<TrackInfo> mTracks;
 
     sp<DataSource> mDataSource;
     DataSourceReader *mReader;
     mkvparser::Segment *mSegment;
     bool mExtractedThumbnails;
+    bool mIsLiveStreaming;
 
     void addTracks();
     void findThumbnails();
 
+    bool isLiveStreaming() const;
+
     MatroskaExtractor(const MatroskaExtractor &);
     MatroskaExtractor &operator=(const MatroskaExtractor &);
 };