Implement http auth login dialog for OS X.

chrome/common/temp_scaffolding_stubs.h

Index: chrome/common/temp_scaffolding_stubs.h
diff --git a/chrome/common/temp_scaffolding_stubs.h b/chrome/common/temp_scaffolding_stubs.h
index 1e681eb8bcc0fb3d6d71e1587ba6e3d5d21fd94b..898081bfd64a97f02a3fdba64daf18506ed398f0 100644
--- a/chrome/common/temp_scaffolding_stubs.h
+++ b/chrome/common/temp_scaffolding_stubs.h
@@ -349,28 +349,6 @@ class HtmlDialogContents {
   };
 };
 
-#if defined(OS_MACOSX)
-class LoginHandler {
- public:
-  void SetAuth(const std::wstring& username,
-               const std::wstring& password) {
-    NOTIMPLEMENTED();
-  }
-  void CancelAuth() { NOTIMPLEMENTED(); }
-  void OnRequestCancelled() { NOTIMPLEMENTED(); }
-};
-#endif
-
-namespace net {
-class AuthChallengeInfo;
-}
-
-#if defined(OS_MACOSX)
-LoginHandler* CreateLoginPrompt(net::AuthChallengeInfo* auth_info,
-                                URLRequest* request,
-                                MessageLoop* ui_loop);
-#endif
-
 class RepostFormWarningDialog {
  public:
   static void RunRepostFormWarningDialog(NavigationController*) { }