Wire up FlexFEC in VideoEngine2.

webrtc/config.h

Index: webrtc/config.h
diff --git a/webrtc/config.h b/webrtc/config.h
index 3b3c3d90a811234515dd0348fe44da8be153ff1d..ee81617d8d063b9a861c44e91e90593e912e1680 100644
--- a/webrtc/config.h
+++ b/webrtc/config.h
@@ -44,6 +44,8 @@ struct UlpfecConfig {
         red_payload_type(-1),
         red_rtx_payload_type(-1) {}
   std::string ToString() const;
+  bool operator==(const UlpfecConfig& other) const;
+
   // Payload type used for ULPFEC packets.
   int ulpfec_payload_type;
 
@@ -60,6 +62,8 @@ struct FlexfecConfig {
   FlexfecConfig();
   ~FlexfecConfig();
   std::string ToString() const;
+  bool IsCompleteAndEnabled() const;
+  bool operator==(const FlexfecConfig& other) const;
 
   // Payload type of FlexFEC.
   int flexfec_payload_type;