Pass chrome version and channel in CHLO message to server.

net/quic/crypto/quic_crypto_client_config.h

Index: net/quic/crypto/quic_crypto_client_config.h
diff --git a/net/quic/crypto/quic_crypto_client_config.h b/net/quic/crypto/quic_crypto_client_config.h
index 38575c85fe58ccde68431d2a88585eac935421e6..78850dd10375018dcef865b76988e55fea440f1d 100644
--- a/net/quic/crypto/quic_crypto_client_config.h
+++ b/net/quic/crypto/quic_crypto_client_config.h
@@ -245,6 +245,11 @@ class NET_EXPORT_PRIVATE QuicCryptoClientConfig : public QuicCryptoConfig {
   // TODO(rch): remove this method when we drop support for Windows XP.
   void DisableEcdsa();
 
+  // Saves the client version. It is passed in QUIC's CHLO message.
+  void set_client_version(std::string client_version) {
+    client_version_ = client_version;
+  }
+
  private:
   typedef std::map<QuicServerId, CachedState*> CachedStateMap;
 
@@ -274,6 +279,9 @@ class NET_EXPORT_PRIVATE QuicCryptoClientConfig : public QuicCryptoConfig {
   // True if ECDSA should be disabled.
   bool disable_ecdsa_;
 
+  // Client version and it is passed in QUIC's CHLO message.
+  std::string client_version_;
+
   DISALLOW_COPY_AND_ASSIGN(QuicCryptoClientConfig);
 };