Roll BoringSSL.

net/ssl/openssl_ssl_util.cc

Index: net/ssl/openssl_ssl_util.cc
diff --git a/net/ssl/openssl_ssl_util.cc b/net/ssl/openssl_ssl_util.cc
index ffa265e5c515f876056ebc5175bb5d70b557326c..9fb83a43f5d7c89c041baa896574265f7bd342a7 100644
--- a/net/ssl/openssl_ssl_util.cc
+++ b/net/ssl/openssl_ssl_util.cc
@@ -43,16 +43,16 @@ class OpenSSLNetErrorLibSingleton {
     net_error_lib_ = ERR_get_next_error_library();
   }
 
-  unsigned net_error_lib() const { return net_error_lib_; }
+  int net_error_lib() const { return net_error_lib_; }
 
  private:
-  unsigned net_error_lib_;
+  int net_error_lib_;
 };
 
 base::LazyInstance<OpenSSLNetErrorLibSingleton>::Leaky g_openssl_net_error_lib =
     LAZY_INSTANCE_INITIALIZER;
 
-unsigned OpenSSLNetErrorLib() {
+int OpenSSLNetErrorLib() {
   return g_openssl_net_error_lib.Get().net_error_lib();
 }