[net] Remove AuthData from net/base/auth.h.

net/base/auth.h

Index: net/base/auth.h
diff --git a/net/base/auth.h b/net/base/auth.h
index ed369f8fc64e65308809d1e54b4675df2ac78174..5f97acbf87f62b7d753ead6de4e5866a0b3f12a6 100644
--- a/net/base/auth.h
+++ b/net/base/auth.h
@@ -89,19 +89,6 @@ enum AuthState {
   AUTH_STATE_CANCELED
 };
 
-class AuthData : public base::RefCountedThreadSafe<AuthData> {
- public:
-  AuthState state;  // whether we need, have, or gave up on authentication.
-  AuthCredentials credentials; // The credentials to use for auth.
-
-  // We wouldn't instantiate this class if we didn't need authentication.
-  AuthData();
-
- private:
-  friend class base::RefCountedThreadSafe<AuthData>;
-  ~AuthData();
-};
-
 }  // namespace net
 
 #endif  // NET_BASE_AUTH_H__