Default constructors for new VideoEngine structs.

BUG=
R=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1543004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4115 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/video_engine/new_include/common.h b/video_engine/new_include/common.h
index 799ea9a..ca35ece 100644
--- a/video_engine/new_include/common.h
+++ b/video_engine/new_include/common.h
@@ -63,6 +63,11 @@
 };
 
 struct RtpStatistics {
+  RtpStatistics()
+      : ssrc(0),
+        fraction_loss(0),
+        cumulative_loss(0),
+        extended_max_sequence_number(0) {}
   uint32_t ssrc;
   int fraction_loss;
   int cumulative_loss;
@@ -70,7 +75,7 @@
   std::string c_name;
 };
 
-// RTCP mode to use. Compound mode is described by RFC 4585 and reduced sized
+// RTCP mode to use. Compound mode is described by RFC 4585 and reduced-size
 // RTCP mode is described by RFC 5506.
 enum RtcpMode {
   kRtcpCompound,
@@ -79,16 +84,18 @@
 
 // Settings for NACK, see RFC 4585 for details.
 struct NackConfig {
+  NackConfig() : rtp_history_ms(0) {}
   // Send side: the time RTP packets are stored for retransmissions.
   // Receive side: the time the receiver is prepared to wait for
   // retransmissions.
-  // Set to '0' to disable
+  // Set to '0' to disable.
   int rtp_history_ms;
 };
 
 // Settings for forward error correction, see RFC 5109 for details. Set the
 // payload types to '-1' to disable.
 struct FecConfig {
+  FecConfig() : ulpfec_payload_type(-1), red_payload_type(-1) {}
   // Payload type used for ULPFEC packets.
   int ulpfec_payload_type;
 
@@ -98,7 +105,8 @@
 
 // Settings for RTP retransmission payload format, see RFC 4588 for details.
 struct RtxConfig {
-  // SSRC to use for the RTX stream, set to '0' for a random generated SSRC.
+  RtxConfig() : ssrc(0), rtx_payload_type(0), video_payload_type(0) {}
+  // SSRC to use for the RTX stream.
   uint32_t ssrc;
 
   // Payload type to use for the RTX stream.
@@ -110,6 +118,7 @@
 
 // RTP header extension to use for the video stream, see RFC 5285.
 struct RtpExtension {
+  RtpExtension() : id(0) {}
   // TODO(mflodman) Add API to query supported extensions.
   std::string name;
   int id;