1 files changed, 6 insertions, 2 deletions
diff --git a/chromium/base/callback.h b/chromium/base/callback.h
index 00675be054d..bcda5af587e 100644
--- a/chromium/base/callback.h
+++ b/chromium/base/callback.h
@@ -8,6 +8,8 @@
 #ifndef BASE_CALLBACK_H_
 #define BASE_CALLBACK_H_
 
+#include <stddef.h>
+
 #include "base/callback_forward.h"
 #include "base/callback_internal.h"
 
@@ -55,9 +57,10 @@ class OnceCallback<R(Args...)> : public internal::CallbackBase {
  public:
   using RunType = R(Args...);
   using PolymorphicInvoke = R (*)(internal::BindStateBase*,
-                                  internal::PassingTraitsType<Args>...);
+                                  internal::PassingType<Args>...);
 
   constexpr OnceCallback() = default;
+  OnceCallback(std::nullptr_t) = delete;
 
   explicit OnceCallback(internal::BindStateBase* bind_state)
       : internal::CallbackBase(bind_state) {}
@@ -102,9 +105,10 @@ class RepeatingCallback<R(Args...)> : public internal::CallbackBaseCopyable {
  public:
   using RunType = R(Args...);
   using PolymorphicInvoke = R (*)(internal::BindStateBase*,
-                                  internal::PassingTraitsType<Args>...);
+                                  internal::PassingType<Args>...);
 
   constexpr RepeatingCallback() = default;
+  RepeatingCallback(std::nullptr_t) = delete;
 
   explicit RepeatingCallback(internal::BindStateBase* bind_state)
       : internal::CallbackBaseCopyable(bind_state) {}