Adding details to most quic connection close calls.

net/quic/crypto/crypto_framer.h

Index: net/quic/crypto/crypto_framer.h
diff --git a/net/quic/crypto/crypto_framer.h b/net/quic/crypto/crypto_framer.h
index 64137a20d26dc9bcfc97748be08dba40ad0763b1..ce2f13a55607dcdafec873cad1dec690f455aac7 100644
--- a/net/quic/crypto/crypto_framer.h
+++ b/net/quic/crypto/crypto_framer.h
@@ -55,6 +55,7 @@ class NET_EXPORT_PRIVATE CryptoFramer {
   }
 
   QuicErrorCode error() const { return error_; }
+  const std::string& error_detail() const { return error_detail_; }
 
   // Processes input data, which must be delivered in order. Returns
   // false if there was an error, and true otherwise.
@@ -99,6 +100,8 @@ class NET_EXPORT_PRIVATE CryptoFramer {
   CryptoFramerState state_;
   // The message currently being parsed.
   CryptoHandshakeMessage message_;
+  // The issue which caused |error_|
+  std::string error_detail_;
   // Number of entires in the message currently being parsed.
   uint16 num_entries_;
   // tags_and_lengths_ contains the tags that are currently being parsed and