Linux: allow linking directly with Kerberos instead of using dlopen.

net/http/http_auth_gssapi_posix.h

Index: net/http/http_auth_gssapi_posix.h
diff --git a/net/http/http_auth_gssapi_posix.h b/net/http/http_auth_gssapi_posix.h
index b1b1227d31b6c6181b46ae2f8e2b88e8f90f4a9e..8e8a11407a7aadbb0e40dd6bdd9d9f7c8dcea5f8 100644
--- a/net/http/http_auth_gssapi_posix.h
+++ b/net/http/http_auth_gssapi_posix.h
@@ -6,6 +6,8 @@
 #define NET_HTTP_HTTP_AUTH_GSSAPI_POSIX_H_
 #pragma once
 
+#include <gssapi.h>
+
 #include <string>
 
 #include "base/gtest_prod_util.h"
@@ -14,9 +16,6 @@
 #include "net/base/net_export.h"
 #include "net/http/http_auth.h"
 
-#define GSS_USE_FUNCTION_POINTERS
-#include "net/third_party/gssapi/gssapi.h"
-
 namespace net {
 
 NET_EXPORT_PRIVATE extern gss_OID CHROME_GSS_C_NT_HOSTBASED_SERVICE_X;
@@ -168,6 +167,16 @@ class NET_EXPORT_PRIVATE GSSAPISharedLibrary : public GSSAPILibrary {
       int* open);
 
  private:
+  typedef typeof(&gss_import_name) gss_import_name_type;
+  typedef typeof(&gss_release_name) gss_release_name_type;
+  typedef typeof(&gss_release_buffer) gss_release_buffer_type;
+  typedef typeof(&gss_display_name) gss_display_name_type;
+  typedef typeof(&gss_display_status) gss_display_status_type;
+  typedef typeof(&gss_init_sec_context) gss_init_sec_context_type;
+  typedef typeof(&gss_wrap_size_limit) gss_wrap_size_limit_type;
+  typedef typeof(&gss_delete_sec_context) gss_delete_sec_context_type;
+  typedef typeof(&gss_inquire_context) gss_inquire_context_type;
+
   FRIEND_TEST_ALL_PREFIXES(HttpAuthGSSAPIPOSIXTest, GSSAPIStartup);
 
   bool InitImpl();