Cast: Add GetStats() extensions API.

media/cast/logging/logging_stats.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 MEDIA_CAST_LOGGING_LOGGING_STATS_H_
 #define MEDIA_CAST_LOGGING_LOGGING_STATS_H_
 
 #include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "media/cast/logging/logging_defines.h"
 
+namespace base {
+class DictionaryValue;
+}
+
 namespace media {
 namespace cast {
 
 class LoggingStats {
  public:
   LoggingStats();
   ~LoggingStats();
 
   void Reset();
 
@@ skipping 18 matching lines @@
                          CastLoggingEvent event,
                          uint32 rtp_timestamp,
                          uint32 frame_id,
                          uint16 packet_id,
                          uint16 max_packet_id,
                          size_t size);
 
   void InsertGenericEvent(const base::TimeTicks& time_of_event,
                           CastLoggingEvent event, int value);
 
-  FrameStatsMap GetFrameStatsData() const;
+  FrameStatsMap GetFrameStatsData(EventMediaType media_type) const;
 
-  PacketStatsMap GetPacketStatsData() const;
+  PacketStatsMap GetPacketStatsData(EventMediaType media_type) const;
 
   GenericStatsMap GetGenericStatsData() const;
 
  private:
   void InsertBaseFrameEvent(const base::TimeTicks& time_of_event,
                             CastLoggingEvent event,
                             uint32 frame_id,
                             uint32 rtp_timestamp);
 
   FrameStatsMap frame_stats_;
   PacketStatsMap packet_stats_;
   GenericStatsMap generic_stats_;
 
   DISALLOW_COPY_AND_ASSIGN(LoggingStats);
 };
 
+// Converts stats provided in |frame_stats_map| and |packet_stats_map| to
+// base::DictionaryValue format. See .cc file for the exact structure.
+scoped_ptr<base::DictionaryValue> ConvertStats(
+    const FrameStatsMap& frame_stats_map,
+    const PacketStatsMap& packet_stats_map);
+
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_LOGGING_LOGGING_STATS_H_