Add NTLM single-sign-on support via Samba's ntlm_auth helper

net/http/http_auth_handler_ntlm.h

Index: net/http/http_auth_handler_ntlm.h
diff --git a/net/http/http_auth_handler_ntlm.h b/net/http/http_auth_handler_ntlm.h
index 9e2abc6254abe464a20c5295fcacc20a7511985e..47d1975a5bbc9ae5f1779e4fbd2ed9029e157ff8 100644
--- a/net/http/http_auth_handler_ntlm.h
+++ b/net/http/http_auth_handler_ntlm.h
@@ -25,6 +25,8 @@
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/message_loop/message_loop.h"
+#include "base/process/process_handle.h"
 #include "base/strings/string16.h"
 #include "net/http/http_auth_handler.h"
 #include "net/http/http_auth_handler_factory.h"
@@ -34,7 +36,8 @@ namespace net {
 class URLSecurityManager;
 
 // Code for handling HTTP NTLM authentication.
-class NET_EXPORT_PRIVATE HttpAuthHandlerNTLM : public HttpAuthHandler {
+class NET_EXPORT_PRIVATE HttpAuthHandlerNTLM : public HttpAuthHandler,
+                                               base::MessageLoopForIO::Watcher {
  public:
   class Factory : public HttpAuthHandlerFactory {
    public:
@@ -97,7 +100,7 @@ class NET_EXPORT_PRIVATE HttpAuthHandlerNTLM : public HttpAuthHandler {
 #endif
 
 #if defined(NTLM_PORTABLE)
-  HttpAuthHandlerNTLM();
+  HttpAuthHandlerNTLM(URLSecurityManager* url_security_manager);
 #endif
 #if defined(NTLM_SSPI)
   HttpAuthHandlerNTLM(SSPILibrary* sspi_library, ULONG max_token_length,
@@ -152,6 +155,17 @@ class NET_EXPORT_PRIVATE HttpAuthHandlerNTLM : public HttpAuthHandler {
 #endif
 
 #if defined(NTLM_PORTABLE)
+  const char *helpername_;
+  int ntlm_write_pipe_;
+  int ntlm_read_pipe_;
+  base::ProcessHandle ntlm_auth_handle_;
+  bool start_ntlm_helper_();
+  bool try_winbind_;
+  CompletionCallback token_callback_;
+  std::string *callback_auth_token_;
+  base::MessageLoopForIO::FileDescriptorWatcher ntlm_read_watcher_;
+  virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE;
+  virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
   static GenerateRandomProc generate_random_proc_;
   static HostNameProc get_host_name_proc_;
 #endif
@@ -163,9 +177,7 @@ class NET_EXPORT_PRIVATE HttpAuthHandlerNTLM : public HttpAuthHandler {
   // "Proxy-Authenticate" response header.
   std::string auth_data_;
 
-#if defined(NTLM_SSPI)
   URLSecurityManager* url_security_manager_;
-#endif
 };
 
 }  // namespace net