Parsing of encoded duration for unencrypted opus streams.

media/base/media_log.h

Index: media/base/media_log.h
diff --git a/media/base/media_log.h b/media/base/media_log.h
index 1a76cbf5f01ed68e67479f523e4119bd365b3dc8..abeb42057fffbdf678bfba5236a9623b5f3e6a80 100644
--- a/media/base/media_log.h
+++ b/media/base/media_log.h
@@ -8,6 +8,7 @@
 #include <sstream>
 #include <string>
 
+#include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/media_export.h"
@@ -36,6 +37,11 @@ class LogHelper {
 
 #define MEDIA_LOG(log_cb) LogHelper(log_cb).stream()
 
+// Logs only while count < max. Increments count for each log. Use LAZY_STREAM
+// to avoid wasteful evaluation of subsequent stream arguments.
+#define LIMITED_MEDIA_LOG(log_cb, count, max) \
+  LAZY_STREAM(MEDIA_LOG(log_cb), (count) < (max) && ((count)++ || true))
+
 class MEDIA_EXPORT MediaLog : public base::RefCountedThreadSafe<MediaLog> {
  public:
   // Convert various enums to strings.