Adds WebMClusterParserTest coverage for duration default/estimation/fallback logic

media/formats/webm/cluster_builder.h

 // Copyright 2014 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_FORMATS_WEBM_CLUSTER_BUILDER_H_
 #define MEDIA_FORMATS_WEBM_CLUSTER_BUILDER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/buffers.h"
@@ skipping 18 matching lines @@
 class ClusterBuilder {
  public:
   ClusterBuilder();
   ~ClusterBuilder();
 
   void SetClusterTimecode(int64 cluster_timecode);
   void AddSimpleBlock(int track_num, int64 timecode, int flags,
                       const uint8* data, int size);
   void AddBlockGroup(int track_num, int64 timecode, int duration, int flags,
                      const uint8* data, int size);
+  void AddBlockGroupWithoutBlockDuration(int track_num, int64 timecode,
+                     int flags, const uint8* data, int size);
 
   scoped_ptr<Cluster> Finish();
 
  private:
+  void AddBlockGroupInternal(int track_num, int64 timecode,
+                             bool include_block_duration, int duration,
+                             int flags, const uint8* data, int size);
   void Reset();
   void ExtendBuffer(int bytes_needed);
   void UpdateUInt64(int offset, int64 value);
   void WriteBlock(uint8* buf, int track_num, int64 timecode, int flags,
                   const uint8* data, int size);
 
   scoped_ptr<uint8[]> buffer_;
   int buffer_size_;
   int bytes_used_;
   int64 cluster_timecode_;
 
   DISALLOW_COPY_AND_ASSIGN(ClusterBuilder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FORMATS_WEBM_CLUSTER_BUILDER_H_