Implement handshake done and cipher dropping.

Summary: This implements the handshake done signal and also cipher dropping.

Reviewed By: yangchi

Differential Revision: D19584922

fbshipit-source-id: a98bec8f1076393b051ff65a2d8aae7d572b42f5

quic/codec/Types.cpp

@@ -396,6 +396,8 @@ std::string toString(FrameType frame) {
       return "MIN_STREAM_DATA";
     case FrameType::EXPIRED_STREAM_DATA:
       return "EXPIRED_STREAM_DATA";
+    case FrameType::HANDSHAKE_DONE:
+      return "HANDSHAKE_DONE";
   }
   LOG(WARNING) << "toString has unhandled frame type";
   return "UNKNOWN";