39       : callback_(std::move(callback)), context_(context) {}  in ContextualOnceCallback()
49     context_->Post(common::BindOnce(std::move(callback_), std::forward<Args>(args)...));  in Invoke()
53     if (context_ != nullptr) {  in InvokeIfNotEmpty()
54       context_->Post(common::BindOnce(std::move(callback_), std::forward<Args>(args)...));  in InvokeIfNotEmpty()
59     return context_ == nullptr;  in IsEmpty()
64   IPostableContext* context_;  variable
75       : callback_(std::move(callback)), context_(context) {}  in ContextualCallback()
85     context_->Post(common::BindOnce(callback_, std::forward<Args>(args)...));  in Invoke()
89     if (context_ != nullptr) {  in InvokeIfNotEmpty()
90       context_->Post(common::BindOnce(callback_, std::forward<Args>(args)...));  in InvokeIfNotEmpty()
95     return context_ == nullptr;  in IsEmpty()
100   IPostableContext* context_;  variable