Enable loading gssapi library for Chromad.

net/http/http_auth_gssapi_posix.cc

Index: net/http/http_auth_gssapi_posix.cc
diff --git a/net/http/http_auth_gssapi_posix.cc b/net/http/http_auth_gssapi_posix.cc
index c8302353b7fc1ac263a820d7251f1a05c36b5ae3..0748f6bc3734392d9b7ddd75b1660fe6073fcb23 100644
--- a/net/http/http_auth_gssapi_posix.cc
+++ b/net/http/http_auth_gssapi_posix.cc
@@ -380,9 +380,11 @@ std::string DescribeContext(GSSAPILibrary* gssapi_lib,
 
 }  // namespace
 
-GSSAPISharedLibrary::GSSAPISharedLibrary(const std::string& gssapi_library_name)
+GSSAPISharedLibrary::GSSAPISharedLibrary(const std::string& gssapi_library_name,
+                                         bool allow_gssapi_library_load)
     : initialized_(false),
       gssapi_library_name_(gssapi_library_name),
+      allow_gssapi_library_load_(allow_gssapi_library_load),
       gssapi_library_(NULL),
       import_name_(NULL),
       release_name_(NULL),
@@ -392,8 +394,7 @@ GSSAPISharedLibrary::GSSAPISharedLibrary(const std::string& gssapi_library_name)
       init_sec_context_(NULL),
       wrap_size_limit_(NULL),
       delete_sec_context_(NULL),
-      inquire_context_(NULL) {
-}
+      inquire_context_(NULL) {}
 
 GSSAPISharedLibrary::~GSSAPISharedLibrary() {
   if (gssapi_library_) {
@@ -411,6 +412,11 @@ bool GSSAPISharedLibrary::Init() {
 bool GSSAPISharedLibrary::InitImpl() {
   DCHECK(!initialized_);
 #if defined(DLOPEN_KERBEROS)
+  // On Chrome OS only Active Directory managed devices are configured
+  // to use Kerberos.
+  if (!allow_gssapi_library_load_)
+    return false;
+
   gssapi_library_ = LoadSharedLibrary();
   if (gssapi_library_ == NULL)
     return false;