Cast: Fix two video freezing problems

media/cast/transport/cast_transport_config.cc

Index: media/cast/transport/cast_transport_config.cc
diff --git a/media/cast/transport/cast_transport_config.cc b/media/cast/transport/cast_transport_config.cc
index cdff2fcd7b7dd79363aea0711fb6f955f97660f2..92fad5c926f2499b8d6f29598848ef6542e661c6 100644
--- a/media/cast/transport/cast_transport_config.cc
+++ b/media/cast/transport/cast_transport_config.cc
@@ -14,14 +14,16 @@ const int kDefaultRtpMaxDelayMs = 100;
 }  // namespace
 
 RtpConfig::RtpConfig()
-    : history_ms(kDefaultRtpHistoryMs),
+    : ssrc(0),
       max_delay_ms(kDefaultRtpMaxDelayMs),
       payload_type(0) {}
 
-CastTransportBaseConfig::CastTransportBaseConfig()
-    : ssrc(0) {}
+RtpConfig::~RtpConfig() {}
 
-CastTransportBaseConfig::~CastTransportBaseConfig() {}
+CastTransportRtpConfig::CastTransportRtpConfig()
+    : max_outstanding_frames(-1) {}
+
+CastTransportRtpConfig::~CastTransportRtpConfig() {}
 
 CastTransportAudioConfig::CastTransportAudioConfig()
     : codec(kOpus), frequency(0), channels(0) {}